Solve for x
x=20-2z-y
Solve for y
y=20-2z-x
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2x+4z=40-2y
Subtract 2y from both sides.
2x=40-2y-4z
Subtract 4z from both sides.
2x=40-4z-2y
The equation is in standard form.
\frac{2x}{2}=\frac{40-4z-2y}{2}
Divide both sides by 2.
x=\frac{40-4z-2y}{2}
Dividing by 2 undoes the multiplication by 2.
x=20-2z-y
Divide 40-2y-4z by 2.
2y+4z=40-2x
Subtract 2x from both sides.
2y=40-2x-4z
Subtract 4z from both sides.
2y=40-4z-2x
The equation is in standard form.
\frac{2y}{2}=\frac{40-4z-2x}{2}
Divide both sides by 2.
y=\frac{40-4z-2x}{2}
Dividing by 2 undoes the multiplication by 2.
y=20-2z-x
Divide 40-2x-4z by 2.
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