Solve for x, y, z, a
a=144
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z=\left(5+7\right)^{2}
Consider the third equation. Insert the known values of variables into the equation.
z=12^{2}
Add 5 and 7 to get 12.
z=144
Calculate 12 to the power of 2 and get 144.
a=144
Consider the fourth equation. Insert the known values of variables into the equation.
x=5 y=7 z=144 a=144
The system is now solved.
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