640=-55(2)+b

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Solution for 640=-55(2)+b equation: 



640=-55(2)+b

We move all terms to the left:

640-(-55(2)+b)=0

We add all the numbers together, and all the variables

-(b-552)+640=0

We get rid of parentheses

-b+552+640=0

We add all the numbers together, and all the variables

-1b+1192=0

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

-b=-1192

b=-1192/-1

b=+1192

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