Solve for a
a=\frac{7-x}{4}
Solve for x
x=7-4a
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8a=14-2x
The equation is in standard form.
\frac{8a}{8}=\frac{14-2x}{8}
Divide both sides by 8.
a=\frac{14-2x}{8}
Dividing by 8 undoes the multiplication by 8.
a=\frac{7-x}{4}
Divide 14-2x by 8.
14-2x=8a
Swap sides so that all variable terms are on the left hand side.
-2x=8a-14
Subtract 14 from both sides.
\frac{-2x}{-2}=\frac{8a-14}{-2}
Divide both sides by -2.
x=\frac{8a-14}{-2}
Dividing by -2 undoes the multiplication by -2.
x=7-4a
Divide 8a-14 by -2.
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