Solve for x, y, z, a
a=1
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z=3\times 3-4\times 2
Consider the third equation. Insert the known values of variables into the equation.
z=9-8
Do the multiplications.
z=1
Subtract 8 from 9 to get 1.
a=1
Consider the fourth equation. Insert the known values of variables into the equation.
x=3 y=2 z=1 a=1
The system is now solved.
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