Solve for x
x=28-4y
Solve for y
y=-\frac{x}{4}+7
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x-28=-4y
Subtract 4y from both sides. Anything subtracted from zero gives its negation.
x=-4y+28
Add 28 to both sides.
4y-28=-x
Subtract x from both sides. Anything subtracted from zero gives its negation.
4y=-x+28
Add 28 to both sides.
4y=28-x
The equation is in standard form.
\frac{4y}{4}=\frac{28-x}{4}
Divide both sides by 4.
y=\frac{28-x}{4}
Dividing by 4 undoes the multiplication by 4.
y=-\frac{x}{4}+7
Divide -x+28 by 4.
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