# Tutor.com Linear Equations Session

##### Jul. 16, 2012

Session Transcript - Math - Algebra, 7/10/2012 4:56PM - Tutor.comSession Date: 7/10/2012 4:56PM
Length: 35 minute(s)
Subject: Math - Algebra

System Message
[00:00:00] *** Please note: All sessions are recorded for quality control. ***

Elizabeth (Customer) (Customer)
[00:00:00] I need help with simple algebra.
[00:00:09] hi

ELIZABETH C (Tutor)

Elizabeth (Customer) (Customer)
[00:00:50] i need some help with my algebra

ELIZABETH C (Tutor)
[00:01:09] ok. do you have a particular problem that you need help with?

Elizabeth (Customer) (Customer)
[00:01:14] yes

ELIZABETH C (Tutor)

Elizabeth (Customer) (Customer)
[00:02:27] thats it

ELIZABETH C (Tutor)
[00:02:44] ok. so we need to solve for p, right?

Elizabeth (Customer) (Customer)
[00:02:48] yes

ELIZABETH C (Tutor)
[00:03:12] ok. what is our first step?

Elizabeth (Customer) (Customer)
[00:03:31] we need a common denominator
[00:03:54] that would be 14

ELIZABETH C (Tutor)
[00:03:59] have you learned how to eliminate the denominator?

Elizabeth (Customer) (Customer)
[00:05:03] I dont recognise the name, but in one of my other tutoe sessions we did something that sounds like that could be it.

ELIZABETH C (Tutor)
[00:05:18] do you want to try?

Elizabeth (Customer) (Customer)
[00:05:28] sure

ELIZABETH C (Tutor)
[00:06:06] hang on
[00:06:18] what was the common denominator that you found?

Elizabeth (Customer) (Customer)
[00:06:23] 14

ELIZABETH C (Tutor)
[00:06:27] good
[00:06:34] multiply by 14 instead of 7

Elizabeth (Customer) (Customer)
[00:06:40] ok
[00:08:07] how do i do it when the number i am mitiplying by and the denominator are not the same?

ELIZABETH C (Tutor)
[00:08:23]
[00:08:35] watch me do the first one, ok?

Elizabeth (Customer) (Customer)
[00:08:38] ok

ELIZABETH C (Tutor)
[00:09:16] cancel and multiply straight across

Elizabeth (Customer) (Customer)
[00:09:59] im sorry, but im not seeing anything on my end but what was already there

ELIZABETH C (Tutor)
[00:10:35] you cannot see the blue on top of yours?

Elizabeth (Customer) (Customer)
[00:10:42] no

ELIZABETH C (Tutor)
[00:10:51] let me try again

Elizabeth (Customer) (Customer)
[00:11:00] ok
[00:11:30] i see it now

ELIZABETH C (Tutor)
[00:11:40] yay
[00:11:49] i will stick with black

Elizabeth (Customer) (Customer)
[00:12:00] ok
[00:12:14] do you want me to try one?

ELIZABETH C (Tutor)
[00:12:33] can you do the rest?

Elizabeth (Customer) (Customer)
[00:13:09] right?

ELIZABETH C (Tutor)
[00:13:21] very good. keep on going
[00:14:47] good. now rewrite your equation without fractions
[00:15:37] close
[00:15:47] what was 14 times 1?

Elizabeth (Customer) (Customer)
[00:16:02] 14

ELIZABETH C (Tutor)
[00:16:30] every piece, even the whole numbers get multiplied by the 14

Elizabeth (Customer) (Customer)
[00:16:49] oh

ELIZABETH C (Tutor)
[00:17:12] that was actually correct b4 you changed it

Elizabeth (Customer) (Customer)
[00:17:20] oh, ok
[00:17:57] ok

ELIZABETH C (Tutor)
[00:18:00] perfect. now to solve
[00:18:09] what should we do next?

Elizabeth (Customer) (Customer)
[00:18:31] subtract 4p from both sides

ELIZABETH C (Tutor)
[00:18:38] hang on
[00:19:21] that was not what i was thinking... but it works

Elizabeth (Customer) (Customer)
[00:19:27] ok

ELIZABETH C (Tutor)
[00:19:32] so.... keep on going pls
[00:20:09] good

Elizabeth (Customer) (Customer)
[00:20:20] now what

ELIZABETH C (Tutor)
[00:20:41] you will need to subtract a -14 from both sides

Elizabeth (Customer) (Customer)
[00:20:50] ok

ELIZABETH C (Tutor)
[00:21:21] if you subtract a negative... how many negatives are there?

Elizabeth (Customer) (Customer)
[00:21:49] Slow down. I'm confused.
[00:22:02] what do you mean?

ELIZABETH C (Tutor)
[00:22:04] we subtracted a negative, right?

Elizabeth (Customer) (Customer)
[00:22:11] yes

ELIZABETH C (Tutor)
[00:22:43] so the outside negative is for the subtraction part... and the inside negative is for the number

Elizabeth (Customer) (Customer)
[00:23:21] i still dont understand

ELIZABETH C (Tutor)
[00:23:33] can we back up and do it another way?

Elizabeth (Customer) (Customer)
[00:23:41] sure

ELIZABETH C (Tutor)
[00:24:20] hang on
[00:24:27] that line was good

Elizabeth (Customer) (Customer)
[00:24:32] oh

ELIZABETH C (Tutor)
[00:24:44] do you want to put it back in
[00:25:09] gr8
[00:25:33] a positive and a negative side by side make a what?

Elizabeth (Customer) (Customer)
[00:25:51] positive?//

ELIZABETH C (Tutor)
[00:26:18] a positive and a negative make a negative ( it's like the negative is stronger)

Elizabeth (Customer) (Customer)
[00:26:30] oh, ok

ELIZABETH C (Tutor)
[00:26:42] so we can rewrite it this way
[00:27:25] what is the opposite of subtraction?

Elizabeth (Customer) (Customer)

ELIZABETH C (Tutor)
[00:27:45] good. add 14 to both sides. this way is probably easier
[00:28:59] very close. what is 7 plus 14 again?

Elizabeth (Customer) (Customer)
[00:29:20] sry

ELIZABETH C (Tutor)
[00:29:26] totally ok
[00:29:48] now we need to get rid of the 8. how can we do that?

Elizabeth (Customer) (Customer)
[00:29:57] devide

ELIZABETH C (Tutor)
[00:30:03] yes, divide

Elizabeth (Customer) (Customer)
[00:30:35] can i use a calculator?

ELIZABETH C (Tutor)
[00:31:01] yes. but it can stay like that because it won't reduce

Elizabeth (Customer) (Customer)
[00:31:44] what do you mean? i was going to devide 21 by 8

ELIZABETH C (Tutor)
[00:32:26] because the problem started out with fractions in it, it is usually better to leave the answer in fraction form also

Elizabeth (Customer) (Customer)
[00:32:36] oh, ok

ELIZABETH C (Tutor)
[00:32:54] well. do you feel like you understand this better?

Elizabeth (Customer) (Customer)
[00:33:01] yes!
[00:33:02] I'm following...

ELIZABETH C (Tutor)
[00:33:10] yay!!
[00:33:05] You got it!
[00:33:30] well... good luck and don't forget the survey

Elizabeth (Customer) (Customer)
[00:33:37] ok

ELIZABETH C (Tutor)
[00:33:40] bye

Elizabeth (Customer) (Customer)
[00:33:44] one more thing

ELIZABETH C (Tutor)
[00:33:55] what?

Elizabeth (Customer) (Customer)
[00:34:08] did you notice we have the same name?

ELIZABETH C (Tutor)
[00:34:25] yes, i did and what a wonderful name it is!!

Elizabeth (Customer) (Customer)
[00:34:33] its amazing
[00:34:41] bye

ELIZABETH C (Tutor)
[00:34:48] have an amazing evening

Elizabeth (Customer) (Customer)
[00:34:58] you to!