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-22-7b=-2(b+6)
We move all terms to the left:
-22-7b-(-2(b+6))=0
We calculate terms in parentheses: -(-2(b+6)), so:We get rid of parentheses
-2(b+6)
We multiply parentheses
-2b-12
Back to the equation:
-(-2b-12)
-7b+2b+12-22=0
We add all the numbers together, and all the variables
-5b-10=0
We move all terms containing b to the left, all other terms to the right
-5b=10
b=10/-5
b=-2
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