Solve for x, y, z, a
a=8
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z=\frac{7}{2}+\frac{9}{2}
Consider the third equation. Insert the known values of variables into the equation.
z=8
Add \frac{7}{2} and \frac{9}{2} to get 8.
a=8
Consider the fourth equation. Insert the known values of variables into the equation.
x=\frac{7}{2} y=\frac{9}{2} z=8 a=8
The system is now solved.
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