Solve for x, y, z, a
a=8
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z=2\times 4
Consider the third equation. Insert the known values of variables into the equation.
z=8
Multiply 2 and 4 to get 8.
a=8
Consider the fourth equation. Insert the known values of variables into the equation.
x=2 y=4 z=8 a=8
The system is now solved.
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