Solve for x, y, z, a
a=-12
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z=2\left(-5\right)-2
Consider the third equation. Insert the known values of variables into the equation.
z=-10-2
Do the multiplications.
z=-12
Subtract 2 from -10 to get -12.
a=-12
Consider the fourth equation. Insert the known values of variables into the equation.
x=-5 y=2 z=-12 a=-12
The system is now solved.
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