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 get rid of parentheses

-b+2+7=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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