Solve for x, y, z, a
a=16
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z=7+9
Consider the third equation. Insert the known values of variables into the equation.
z=16
Add 7 and 9 to get 16.
a=16
Consider the fourth equation. Insert the known values of variables into the equation.
x=7 y=9 z=16 a=16
The system is now solved.
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