Solve for b
b=a+2
Solve for a
a=b-2
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-b=-2-a
Subtract a from both sides.
-b=-a-2
The equation is in standard form.
\frac{-b}{-1}=\frac{-a-2}{-1}
Divide both sides by -1.
b=\frac{-a-2}{-1}
Dividing by -1 undoes the multiplication by -1.
b=a+2
Divide -2-a by -1.
a=-2+b
Add b to both sides.
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