Solve for x
x=-\frac{7y}{2}+130
Solve for y
y=\frac{260-2x}{7}
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6x=780-21y
Subtract 21y from both sides.
\frac{6x}{6}=\frac{780-21y}{6}
Divide both sides by 6.
x=\frac{780-21y}{6}
Dividing by 6 undoes the multiplication by 6.
x=-\frac{7y}{2}+130
Divide 780-21y by 6.
21y=780-6x
Subtract 6x from both sides.
\frac{21y}{21}=\frac{780-6x}{21}
Divide both sides by 21.
y=\frac{780-6x}{21}
Dividing by 21 undoes the multiplication by 21.
y=\frac{260-2x}{7}
Divide 780-6x by 21.
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