Solve for x
x=-\frac{y}{2}+2
Solve for y
y=4-2x
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2x+86+y=90
Add 30 and 56 to get 86.
2x+y=90-86
Subtract 86 from both sides.
2x+y=4
Subtract 86 from 90 to get 4.
2x=4-y
Subtract y from both sides.
\frac{2x}{2}=\frac{4-y}{2}
Divide both sides by 2.
x=\frac{4-y}{2}
Dividing by 2 undoes the multiplication by 2.
x=-\frac{y}{2}+2
Divide 4-y by 2.
2x+86+y=90
Add 30 and 56 to get 86.
86+y=90-2x
Subtract 2x from both sides.
y=90-2x-86
Subtract 86 from both sides.
y=4-2x
Subtract 86 from 90 to get 4.
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