-7(1+a)=-9-6a

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Solution for -7(1+a)=-9-6a equation: 



-7(1+a)=-9-6a

We move all terms to the left:

-7(1+a)-(-9-6a)=0

We add all the numbers together, and all the variables

-7(a+1)-(-6a-9)=0

We multiply parentheses

-7a-(-6a-9)-7=0

We get rid of parentheses

-7a+6a+9-7=0

We add all the numbers together, and all the variables

-1a+2=0

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

-a=-2

a=-2/-1

a=+2

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