-1(1a-7)=-9+7a

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Solution for -1(1a-7)=-9+7a equation: 



-1(1a-7)=-9+7a

We move all terms to the left:

-1(1a-7)-(-9+7a)=0

We add all the numbers together, and all the variables

-1(a-7)-(7a-9)=0

We get rid of parentheses

-1(a-7)-7a+9=0

We add all the numbers together, and all the variables

-7a-1(a-7)+9=0

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

-7a-1(a-7)=-9

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