Solve for b
b=12
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6=\frac{-12}{2}+b
Express -\frac{1}{2}\times 12 as a single fraction.
6=-6+b
Divide -12 by 2 to get -6.
-6+b=6
Swap sides so that all variable terms are on the left hand side.
b=6+6
Add 6 to both sides.
b=12
Add 6 and 6 to get 12.
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