7x-72=3x+40

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Solution for 7x-72=3x+40 equation: 



7x-72=3x+40

We move all terms to the left:

7x-72-(3x+40)=0

We get rid of parentheses

7x-3x-40-72=0

We add all the numbers together, and all the variables

4x-112=0

We move all terms containing x to the left, all other terms to the right

4x=112

x=112/4

x=28

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