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7x=54+9y
Add 9y to both sides.
7x=9y+54
The equation is in standard form.
\frac{7x}{7}=\frac{9y+54}{7}
Divide both sides by 7.
x=\frac{9y+54}{7}
Dividing by 7 undoes the multiplication by 7.
-9y=54-7x
Subtract 7x from both sides.
\frac{-9y}{-9}=\frac{54-7x}{-9}
Divide both sides by -9.
y=\frac{54-7x}{-9}
Dividing by -9 undoes the multiplication by -9.
y=\frac{7x}{9}-6
Divide 54-7x by -9.