Solve for x, y, z, a
a=120
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z=10\times 14-4\times 5
Consider the third equation. Insert the known values of variables into the equation.
z=140-20
Do the multiplications.
z=120
Subtract 20 from 140 to get 120.
a=120
Consider the fourth equation. Insert the known values of variables into the equation.
x=14 y=5 z=120 a=120
The system is now solved.
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