Why we do the same thing to both sides: Simple equations Khan Academy 586 02:31
Why we do the same thing to both sides: Two-step equations Khan Academy 574 05:11
Solving ax + b = c Khan Academy 572 08:40
Two-step equations Khan Academy 564 13:49
Example: Dimensions of a garden Khan Academy 599 02:01
Example: Two-step equation with x/4 term Khan Academy 562 03:03