Solve for y
y=x-2z-7
Solve for x
x=y+2z+7
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-y=2z+7-x
Subtract x from both sides.
-y=7+2z-x
The equation is in standard form.
\frac{-y}{-1}=\frac{7+2z-x}{-1}
Divide both sides by -1.
y=\frac{7+2z-x}{-1}
Dividing by -1 undoes the multiplication by -1.
y=x-2z-7
Divide 2z+7-x by -1.
x=2z+7+y
Add y to both sides.
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