Solve for x, y, z, a
a=-11
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y=2\left(-4\right)-3
Consider the second equation. Insert the known values of variables into the equation.
y=-8-3
Multiply 2 and -4 to get -8.
y=-11
Subtract 3 from -8 to get -11.
z=-11
Consider the third equation. Insert the known values of variables into the equation.
a=-11
Consider the fourth equation. Insert the known values of variables into the equation.
x=-4 y=-11 z=-11 a=-11
The system is now solved.
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