7(x+9)=x-15

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Solution for 7(x+9)=x-15 equation: 



7(x+9)=x-15

We move all terms to the left:

7(x+9)-(x-15)=0

We multiply parentheses

7x-(x-15)+63=0

We get rid of parentheses

7x-x+15+63=0

We add all the numbers together, and all the variables

6x+78=0

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

6x=-78

x=-78/6

x=-13

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