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Solve for x, y, z
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z=xy
Solve xy=z for z.
\left(x+5\right)\left(y-200\right)=xy \left(x-4\right)\left(y-232\right)=xy
Substitute xy for z in the second and third equation.
y=200+40x x=4-\frac{1}{58}y
Solve these equations for y and x respectively.
x=4-\frac{1}{58}\left(200+40x\right)
Substitute 200+40x for y in the equation x=4-\frac{1}{58}y.
x=\frac{16}{49}
Solve x=4-\frac{1}{58}\left(200+40x\right) for x.
y=200+40\times \frac{16}{49}
Substitute \frac{16}{49} for x in the equation y=200+40x.
y=\frac{10440}{49}
Calculate y from y=200+40\times \frac{16}{49}.
z=\frac{16}{49}\times \frac{10440}{49}
Substitute \frac{10440}{49} for y and \frac{16}{49} for x in the equation z=xy.
z=\frac{167040}{2401}
Calculate z from z=\frac{16}{49}\times \frac{10440}{49}.
x=\frac{16}{49} y=\frac{10440}{49} z=\frac{167040}{2401}
The system is now solved.