Solve for x, y, z
z=9
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x-300+2\times 15=42
Consider the first equation. Multiply 50 and 6 to get 300.
x-300+30=42
Multiply 2 and 15 to get 30.
x-270=42
Add -300 and 30 to get -270.
x=42+270
Add 270 to both sides.
x=312
Add 42 and 270 to get 312.
x=312 y=9 z=9
The system is now solved.
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