Solve for x
x=33-y
Solve for y
y=33-x
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3x-21+3\left(y+7\right)=99
Use the distributive property to multiply 3 by x-7.
3x-21+3y+21=99
Use the distributive property to multiply 3 by y+7.
3x+3y=99
Add -21 and 21 to get 0.
3x=99-3y
Subtract 3y from both sides.
\frac{3x}{3}=\frac{99-3y}{3}
Divide both sides by 3.
x=\frac{99-3y}{3}
Dividing by 3 undoes the multiplication by 3.
x=33-y
Divide 99-3y by 3.
3x-21+3\left(y+7\right)=99
Use the distributive property to multiply 3 by x-7.
3x-21+3y+21=99
Use the distributive property to multiply 3 by y+7.
3x+3y=99
Add -21 and 21 to get 0.
3y=99-3x
Subtract 3x from both sides.
\frac{3y}{3}=\frac{99-3x}{3}
Divide both sides by 3.
y=\frac{99-3x}{3}
Dividing by 3 undoes the multiplication by 3.
y=33-x
Divide 99-3x by 3.
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