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