Solve for x, y, z, a
a=-28
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y=20-8\times 6
Consider the second equation. Insert the known values of variables into the equation.
y=20-48
Multiply -8 and 6 to get -48.
y=-28
Subtract 48 from 20 to get -28.
z=-28
Consider the third equation. Insert the known values of variables into the equation.
a=-28
Consider the fourth equation. Insert the known values of variables into the equation.
x=6 y=-28 z=-28 a=-28
The system is now solved.
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