Solve for x, y, z
x=7
y=2
z=4
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y=-3x+23
Solve 3x+y=23 for y.
3\left(-3x+23\right)+x=13 x-3x+23+2z=17
Substitute -3x+23 for y in the second and third equation.
x=7 z=-3+x
Solve these equations for x and z respectively.
z=-3+7
Substitute 7 for x in the equation z=-3+x.
z=4
Calculate z from z=-3+7.
y=-3\times 7+23
Substitute 7 for x in the equation y=-3x+23.
y=2
Calculate y from y=-3\times 7+23.
x=7 y=2 z=4
The system is now solved.
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