7-2b=-b

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Solution for 7-2b=-b equation: 



7-2b=-b

We move all terms to the left:

7-2b-(-b)=0

We add all the numbers together, and all the variables

-2b-(-1b)+7=0

We get rid of parentheses

-2b+1b+7=0

We add all the numbers together, and all the variables

-1b+7=0

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

-b=-7

b=-7/-1

b=+7

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