Solve for x
x=-\frac{y}{8}+\frac{189}{2}
Solve for y
y=756-8x
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4x+y+4x-36=720
Multiply both sides of the equation by 4.
8x+y-36=720
Combine 4x and 4x to get 8x.
8x-36=720-y
Subtract y from both sides.
8x=720-y+36
Add 36 to both sides.
8x=756-y
Add 720 and 36 to get 756.
\frac{8x}{8}=\frac{756-y}{8}
Divide both sides by 8.
x=\frac{756-y}{8}
Dividing by 8 undoes the multiplication by 8.
x=-\frac{y}{8}+\frac{189}{2}
Divide 756-y by 8.
4x+y+4x-36=720
Multiply both sides of the equation by 4.
8x+y-36=720
Combine 4x and 4x to get 8x.
y-36=720-8x
Subtract 8x from both sides.
y=720-8x+36
Add 36 to both sides.
y=756-8x
Add 720 and 36 to get 756.
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