Solve for x, y, z, a
a=8
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z=-1+3^{2}
Consider the third equation. Insert the known values of variables into the equation.
z=-1+9
Calculate 3 to the power of 2 and get 9.
z=8
Add -1 and 9 to get 8.
a=8
Consider the fourth equation. Insert the known values of variables into the equation.
x=-1 y=3 z=8 a=8
The system is now solved.
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