Solve for y
y=\frac{x+3z-15}{2}
Solve for x
x=2y-3z+15
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15+2y-3z=x
Swap sides so that all variable terms are on the left hand side.
2y-3z=x-15
Subtract 15 from both sides.
2y=x-15+3z
Add 3z to both sides.
2y=x+3z-15
The equation is in standard form.
\frac{2y}{2}=\frac{x+3z-15}{2}
Divide both sides by 2.
y=\frac{x+3z-15}{2}
Dividing by 2 undoes the multiplication by 2.
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