9(x-9)=8(7+x)

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Solution for 9(x-9)=8(7+x) equation: 



9(x-9)=8(7+x)

We move all terms to the left:

9(x-9)-(8(7+x))=0

We add all the numbers together, and all the variables

9(x-9)-(8(x+7))=0

We multiply parentheses

9x-(8(x+7))-81=0



We calculate terms in parentheses: -(8(x+7)), so:

8(x+7)

We multiply parentheses

8x+56

Back to the equation:

-(8x+56)



We get rid of parentheses

9x-8x-56-81=0

We add all the numbers together, and all the variables

x-137=0

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

x=137

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