Solve for A
A=2-B
Solve for B
B=2-A
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4A=8-4B
Subtract 4B from both sides.
\frac{4A}{4}=\frac{8-4B}{4}
Divide both sides by 4.
A=\frac{8-4B}{4}
Dividing by 4 undoes the multiplication by 4.
A=2-B
Divide 8-4B by 4.
4B=8-4A
Subtract 4A from both sides.
\frac{4B}{4}=\frac{8-4A}{4}
Divide both sides by 4.
B=\frac{8-4A}{4}
Dividing by 4 undoes the multiplication by 4.
B=2-A
Divide 8-4A by 4.
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