-6(a+8)=90

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Solution for -6(a+8)=90 equation: 



-6(a+8)=90

We move all terms to the left:

-6(a+8)-(90)=0

We multiply parentheses

-6a-48-90=0

We add all the numbers together, and all the variables

-6a-138=0

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

-6a=138

a=138/-6

a=-23

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