Solve for x, y, z
z=-11
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y=9-5\left(11-7\right)
Consider the second equation. Insert the known values of variables into the equation.
y=9-5\times 4
Subtract 7 from 11 to get 4.
y=9-20
Multiply -5 and 4 to get -20.
y=-11
Subtract 20 from 9 to get -11.
z=-11
Consider the third equation. Insert the known values of variables into the equation.
x=7 y=-11 z=-11
The system is now solved.
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