2=-7+b

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Solution for 2=-7+b equation: 



2=-7+b

We move all terms to the left:

2-(-7+b)=0

We add all the numbers together, and all the variables

-(b-7)+2=0

We get rid of parentheses

-b+7+2=0

We add all the numbers together, and all the variables

-1b+9=0

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

-b=-9

b=-9/-1

b=+9

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