Solve for x, y, z
z=12
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4x-18=0
Consider the first equation. Multiply both sides by 2. Anything times zero gives zero.
4x=18
Add 18 to both sides. Anything plus zero gives itself.
x=\frac{18}{4}
Divide both sides by 4.
x=\frac{9}{2}
Reduce the fraction \frac{18}{4} to lowest terms by extracting and canceling out 2.
x=\frac{9}{2} y=12 z=12
The system is now solved.
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