Solve for x
x=-\frac{5y}{2}+50
Solve for y
y=-\frac{2x}{5}+20
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-0.4x+20=y
Swap sides so that all variable terms are on the left hand side.
-0.4x=y-20
Subtract 20 from both sides.
\frac{-0.4x}{-0.4}=\frac{y-20}{-0.4}
Divide both sides of the equation by -0.4, which is the same as multiplying both sides by the reciprocal of the fraction.
x=\frac{y-20}{-0.4}
Dividing by -0.4 undoes the multiplication by -0.4.
x=-\frac{5y}{2}+50
Divide y-20 by -0.4 by multiplying y-20 by the reciprocal of -0.4.
Examples
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