Solve for x, y, z, a
a=5
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3x=7-1
Consider the first equation. Subtract 1 from both sides.
3x=6
Subtract 1 from 7 to get 6.
x=\frac{6}{3}
Divide both sides by 3.
x=2
Divide 6 by 3 to get 2.
x=2 y=5 z=5 a=5
The system is now solved.
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