Solve for x, y, z, a
a=49
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z=\left(5+2\right)^{2}
Consider the third equation. Insert the known values of variables into the equation.
z=7^{2}
Add 5 and 2 to get 7.
z=49
Calculate 7 to the power of 2 and get 49.
a=49
Consider the fourth equation. Insert the known values of variables into the equation.
x=5 y=2 z=49 a=49
The system is now solved.
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