This example demonstrates how we solve an equation expressed such: ax + b = c. It's a little more complicated than previous examples, but you can do it!
Two-step equations is a free educational video by Khan Academy.It helps students in grades 7 practice the following standards 7.EE.B.4.
1. 7.EE.B.4 : Use variables to represent quantities in a real-world or mathematical problem, and construct simple equations and inequalities to solve problems by reasoning about the quantities..
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