Solve for x, y, z, a
a=9
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163=x
Consider the first equation. Add 123 and 40 to get 163.
x=163
Swap sides so that all variable terms are on the left hand side.
y=80
Consider the second equation. Swap sides so that all variable terms are on the left hand side.
x=163 y=80 z=9 a=9
The system is now solved.
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