Solve for x, y, z
z=70
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20=2x+3
Consider the first equation. Multiply 1 and 2 to get 2.
2x+3=20
Swap sides so that all variable terms are on the left hand side.
2x=20-3
Subtract 3 from both sides.
2x=17
Subtract 3 from 20 to get 17.
x=\frac{17}{2}
Divide both sides by 2.
x=\frac{17}{2} y=70 z=70
The system is now solved.
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