7x-84-3x-57=15

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Solution for 7x-84-3x-57=15 equation: 



7x-84-3x-57=15

We move all terms to the left:

7x-84-3x-57-(15)=0

We add all the numbers together, and all the variables

4x-156=0

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

4x=156

x=156/4

x=39

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