Solve for x
x=-\frac{y}{2}+700
Solve for y
y=1400-2x
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y=5x+1400-7x
Use the distributive property to multiply 7 by 200-x.
y=-2x+1400
Combine 5x and -7x to get -2x.
-2x+1400=y
Swap sides so that all variable terms are on the left hand side.
-2x=y-1400
Subtract 1400 from both sides.
\frac{-2x}{-2}=\frac{y-1400}{-2}
Divide both sides by -2.
x=\frac{y-1400}{-2}
Dividing by -2 undoes the multiplication by -2.
x=-\frac{y}{2}+700
Divide y-1400 by -2.
y=5x+1400-7x
Use the distributive property to multiply 7 by 200-x.
y=-2x+1400
Combine 5x and -7x to get -2x.
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Limits
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