Solve for x, y, z, a
a=12
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z=2\times 3+3\times 2
Consider the third equation. Insert the known values of variables into the equation.
z=6+6
Do the multiplications.
z=12
Add 6 and 6 to get 12.
a=12
Consider the fourth equation. Insert the known values of variables into the equation.
x=3 y=2 z=12 a=12
The system is now solved.
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