-a-8(a-8)=100

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Solution for -a-8(a-8)=100 equation: 



-a-8(a-8)=100

We move all terms to the left:

-a-8(a-8)-(100)=0

We add all the numbers together, and all the variables

-1a-8(a-8)-100=0

We multiply parentheses

-1a-8a+64-100=0

We add all the numbers together, and all the variables

-9a-36=0

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

-9a=36

a=36/-9

a=-4

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