7x-100=3x+42

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Solution for 7x-100=3x+42 equation: 



7x-100=3x+42

We move all terms to the left:

7x-100-(3x+42)=0

We get rid of parentheses

7x-3x-42-100=0

We add all the numbers together, and all the variables

4x-142=0

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

4x=142

x=142/4

x=35+1/2

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