Solve for x, y, z, a
a=17
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z=3\times 3-4\left(-2\right)
Consider the third equation. Insert the known values of variables into the equation.
z=9+8
Do the multiplications.
z=17
Add 9 and 8 to get 17.
a=17
Consider the fourth equation. Insert the known values of variables into the equation.
x=3 y=-2 z=17 a=17
The system is now solved.
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