# Tutor.com Linear Equations Session

##### Jun. 7, 2012

Session Transcript - Math - Algebra, 5/24/2012 7:20PM - Tutor.comSession Date: 5/24/2012 7:20PM
Length: 10.4 minute(s)
Subject: Math - Algebra

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

Guest (Customer)
[00:00:00] systems

Sarah S (Tutor)

Guest (Customer)
[00:00:42] hi
[00:00:57] i need to solve this system by using substitution

Sarah S (Tutor)
[00:01:11] Hi there! substitution, eh? fun!
[00:01:19] Ok, do you know where to start?

Guest (Customer)
[00:02:02] maybe by plugging the first equation into the bottom one?

Sarah S (Tutor)
[00:02:13] You're on the right track!
[00:02:53] Before you can substitute you have to get a variable by itself.
[00:03:02] solve for x.

Guest (Customer)
[00:03:34] could i divide 22 by 4y?

Sarah S (Tutor)
[00:04:05] Consider how the 4y is "connected" to the x. Is it add, subtract, mult or divide?

Guest (Customer)

Sarah S (Tutor)
[00:04:31] Exactly. So you have to do the opposite to move it to the other side.

Guest (Customer)

Sarah S (Tutor)
[00:04:46] you got it!
[00:04:57] Perfect!

Guest (Customer)
[00:05:00] ok

Sarah S (Tutor)
[00:05:07] Now you can substitute.
[00:05:52] Substitute what X is for x!
[00:06:21] Lookin' good!
[00:07:36] you're doing great!
[00:08:04] Awesome! Do you know what to do next?
[00:08:43] Perfect! Great work!