# Tutor.com Real Numbers Session

##### Jul. 31, 2012

Session Transcript - Math - Algebra, 7/30/2012 6:01PM - Tutor.comSession Date: 7/30/2012 6:01PM
Length: 20.7 minute(s)
Subject: Math - Algebra

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

Guest (Customer)
[00:00:00] I need help.

ELIZABETH C (Tutor)
[00:00:40] hi. how may i help you. do you have a particular problem that we can look at together on the board?

Guest (Customer)
[00:00:58] Yes.
[00:01:02] Multiply.
[00:01:07] 3(s + t + w)
[00:01:12] 3s + 3t + 3w

ELIZABETH C (Tutor)
[00:01:32] was that the problem?

Guest (Customer)
[00:01:32] right?
[00:01:35] yes

ELIZABETH C (Tutor)
[00:01:43] yes, right

Guest (Customer)
[00:02:10] -7(x + 4)
[00:02:12] -7x + 28

ELIZABETH C (Tutor)
[00:02:19] close
[00:02:28] what is -7*4?

Guest (Customer)
[00:02:30] -28

ELIZABETH C (Tutor)
[00:02:50] good. change the +28 to a -28.. and it is correct

Guest (Customer)
[00:03:02] Collect like terms.
[00:03:12] 2y + 8y + 7x + 5y
[00:03:41] 9x + 13y

ELIZABETH C (Tutor)
[00:04:22] i see 3 "y" terms in the problem that you typed. is that correct?

Guest (Customer)
[00:04:39] oops its 2x

ELIZABETH C (Tutor)
[00:04:46] ohhh... ok

Guest (Customer)
[00:05:47] (-6)(-5)
[00:05:49] Multiply.
[00:05:50] 30

ELIZABETH C (Tutor)
[00:05:56] correct

Guest (Customer)
[00:06:15] -1/2 x 5/8
[00:06:52] -5/16

ELIZABETH C (Tutor)
[00:07:09] once again... correct

Guest (Customer)
[00:07:59] Rename each additive inverse without parantheses.
[00:08:04] How do I do that?

ELIZABETH C (Tutor)
[00:08:22] do you have an example that we can look at together?
[00:08:47] and by the way, "additive inverse" is a fancy name for opposite

Guest (Customer)
[00:09:02] yes

ELIZABETH C (Tutor)

Guest (Customer)
[00:09:55] -(4x - 7y + 2)

ELIZABETH C (Tutor)
[00:10:41] i believe what they want you to do is distribute the negative so you can get rid of parenthesis
[00:12:02] have you distributed yet?

Guest (Customer)
[00:12:07] -4x + 7y - 2

ELIZABETH C (Tutor)
[00:12:20] yes
[00:12:51] do you have another similar problem that you need help with?

Guest (Customer)
[00:13:34] 5b - 4(6b - 2)

ELIZABETH C (Tutor)
[00:14:01] ok. are you supposed to simplify this?

Guest (Customer)
[00:14:11] yes

ELIZABETH C (Tutor)

Guest (Customer)
[00:14:45] I did 5b - 24b - 8
[00:14:49] -19 - 8

ELIZABETH C (Tutor)
[00:15:22] close... do you see what you forget to put in there?
[00:16:47] hi. where did the "b" go?

Guest (Customer)
[00:17:02] idk
[00:17:28] Oh I see
[00:17:34] -19b - 8

ELIZABETH C (Tutor)
[00:17:35] You got it!
[00:18:04] good. and congrats for finding your typo!
[00:18:48] well, it's about time to wrap it up. any last questions before i go?

Guest (Customer)
[00:19:00] nope, you were amazing.

ELIZABETH C (Tutor)
[00:19:14] a tutor is only as good as her student
[00:19:19] have a gr8 evening
[00:19:29] don't forget the survey on the way out
[00:20:32] bye