-63=7x+x+9

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Solution for -63=7x+x+9 equation: 



-63=7x+x+9

We move all terms to the left:

-63-(7x+x+9)=0

We add all the numbers together, and all the variables

-(8x+9)-63=0

We get rid of parentheses

-8x-9-63=0

We add all the numbers together, and all the variables

-8x-72=0

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

-8x=72

x=72/-8

x=-9

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