Solve for x, y
x=56-Y
y=-\frac{783}{Y-56}
Y\neq 56
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Y+x=56
Consider the first equation. Swap sides so that all variable terms are on the left hand side.
x=56-Y
Subtract Y from both sides.
\left(56-Y\right)y=783
Substitute 56-Y for x in xy=783. Because the resulting equation contains only one variable, you can solve for y directly.
y=\frac{783}{56-Y}
Divide 783 by 56-Y.
x=56-Y,y=\frac{783}{56-Y}
The system is now solved.
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