Solve for x
x=\frac{2y+1}{3}
Solve for y
y=\frac{3x-1}{2}
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21x=7+14y
Add 14y to both sides.
21x=14y+7
The equation is in standard form.
\frac{21x}{21}=\frac{14y+7}{21}
Divide both sides by 21.
x=\frac{14y+7}{21}
Dividing by 21 undoes the multiplication by 21.
x=\frac{2y+1}{3}
Divide 7+14y by 21.
-14y=7-21x
Subtract 21x from both sides.
\frac{-14y}{-14}=\frac{7-21x}{-14}
Divide both sides by -14.
y=\frac{7-21x}{-14}
Dividing by -14 undoes the multiplication by -14.
y=\frac{3x-1}{2}
Divide 7-21x by -14.
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