Solve for x
x=-\frac{7y}{100}+120
Solve for y
y=\frac{12000-100x}{7}
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100x=12000-7y
Subtract 7y from both sides.
\frac{100x}{100}=\frac{12000-7y}{100}
Divide both sides by 100.
x=\frac{12000-7y}{100}
Dividing by 100 undoes the multiplication by 100.
x=-\frac{7y}{100}+120
Divide 12000-7y by 100.
7y=12000-100x
Subtract 100x from both sides.
\frac{7y}{7}=\frac{12000-100x}{7}
Divide both sides by 7.
y=\frac{12000-100x}{7}
Dividing by 7 undoes the multiplication by 7.
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