-4=-2b+b

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Solution for -4=-2b+b equation: 



-4=-2b+b

We move all terms to the left:

-4-(-2b+b)=0

We add all the numbers together, and all the variables

-(-1b)-4=0

We get rid of parentheses

1b-4=0

We add all the numbers together, and all the variables

b-4=0

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

b=4

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