Solve for b
b=4
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12-4b+1=1-b
Add 11 and 1 to get 12.
13-4b=1-b
Add 12 and 1 to get 13.
13-4b+b=1
Add b to both sides.
13-3b=1
Combine -4b and b to get -3b.
-3b=1-13
Subtract 13 from both sides.
-3b=-12
Subtract 13 from 1 to get -12.
b=\frac{-12}{-3}
Divide both sides by -3.
b=4
Divide -12 by -3 to get 4.
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