7-b=-2

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Solution for 7-b=-2 equation: 



7-b=-2

We move all terms to the left:

7-b-(-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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