Solve for x, y, z, a
a=9
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z=5+4
Consider the third equation. Insert the known values of variables into the equation.
z=9
Add 5 and 4 to get 9.
a=9
Consider the fourth equation. Insert the known values of variables into the equation.
x=5 y=4 z=9 a=9
The system is now solved.
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