Solve for x, y, z, a
a=40
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z=5\times 8
Consider the third equation. Insert the known values of variables into the equation.
z=40
Multiply 5 and 8 to get 40.
a=40
Consider the fourth equation. Insert the known values of variables into the equation.
x=5 y=8 z=40 a=40
The system is now solved.
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