72=8x-7x

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Solution for 72=8x-7x equation: 



72=8x-7x

We move all terms to the left:

72-(8x-7x)=0

We add all the numbers together, and all the variables

-(+x)+72=0

We get rid of parentheses

-x+72=0

We add all the numbers together, and all the variables

-1x+72=0

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

-x=-72

x=-72/-1

x=+72

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