Solve for x
x=\frac{7\left(y+4\right)}{4}
Solve for y
y=\frac{4\left(x-7\right)}{7}
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4x=28+7y
Add 7y to both sides.
4x=7y+28
The equation is in standard form.
\frac{4x}{4}=\frac{7y+28}{4}
Divide both sides by 4.
x=\frac{7y+28}{4}
Dividing by 4 undoes the multiplication by 4.
x=\frac{7y}{4}+7
Divide 28+7y by 4.
-7y=28-4x
Subtract 4x from both sides.
\frac{-7y}{-7}=\frac{28-4x}{-7}
Divide both sides by -7.
y=\frac{28-4x}{-7}
Dividing by -7 undoes the multiplication by -7.
y=\frac{4x}{7}-4
Divide 28-4x by -7.
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