(a-7)=-9a-57

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Solution for (a-7)=-9a-57 equation: 



(a-7)=-9a-57

We move all terms to the left:

(a-7)-(-9a-57)=0

We get rid of parentheses

a+9a-7+57=0

We add all the numbers together, and all the variables

10a+50=0

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

10a=-50

a=-50/10

a=-5

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