Solve for a
a=-\frac{b}{4}+\frac{1}{2}
Solve for b
b=2-4a
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4a+b=2
Swap sides so that all variable terms are on the left hand side.
4a=2-b
Subtract b from both sides.
\frac{4a}{4}=\frac{2-b}{4}
Divide both sides by 4.
a=\frac{2-b}{4}
Dividing by 4 undoes the multiplication by 4.
a=-\frac{b}{4}+\frac{1}{2}
Divide 2-b by 4.
4a+b=2
Swap sides so that all variable terms are on the left hand side.
b=2-4a
Subtract 4a from both sides.
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