-a-9(a-4)=86

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Solution for -a-9(a-4)=86 equation: 



-a-9(a-4)=86

We move all terms to the left:

-a-9(a-4)-(86)=0

We add all the numbers together, and all the variables

-1a-9(a-4)-86=0

We multiply parentheses

-1a-9a+36-86=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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