Solve for x
x=\frac{70-7y}{3}
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3x=70-7y
Subtract 7y from both sides.
\frac{3x}{3}=\frac{70-7y}{3}
Divide both sides by 3.
x=\frac{70-7y}{3}
Dividing by 3 undoes the multiplication by 3.
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