80=-20(12)+b

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Solution for 80=-20(12)+b equation: 



80=-20(12)+b

We move all terms to the left:

80-(-20(12)+b)=0

We add all the numbers together, and all the variables

-(b-2012)+80=0

We get rid of parentheses

-b+2012+80=0

We add all the numbers together, and all the variables

-1b+2092=0

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

-b=-2092

b=-2092/-1

b=+2092

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