-90=-16a-12

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Solution for -90=-16a-12 equation: 



-90=-16a-12

We move all terms to the left:

-90-(-16a-12)=0

We get rid of parentheses

16a+12-90=0

We add all the numbers together, and all the variables

16a-78=0

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

16a=78

a=78/16

a=4+7/8

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