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2a+2b=112
Swap sides so that all variable terms are on the left hand side.
2a=112-2b
Subtract 2b from both sides.
\frac{2a}{2}=\frac{112-2b}{2}
Divide both sides by 2.
a=\frac{112-2b}{2}
Dividing by 2 undoes the multiplication by 2.
a=56-b
Divide 112-2b by 2.
2a+2b=112
Swap sides so that all variable terms are on the left hand side.
2b=112-2a
Subtract 2a from both sides.
\frac{2b}{2}=\frac{112-2a}{2}
Divide both sides by 2.
b=\frac{112-2a}{2}
Dividing by 2 undoes the multiplication by 2.
b=56-a
Divide 112-2a by 2.