Solve for x, y, z, a
a=3
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x=5
Consider the first equation. Add 1 and 4 to get 5.
y=5+2
Consider the second equation. Insert the known values of variables into the equation.
y=7
Add 5 and 2 to get 7.
z=3
Consider the third equation. Add 2 and 1 to get 3.
a=3
Consider the fourth equation. Insert the known values of variables into the equation.
x=5 y=7 z=3 a=3
The system is now solved.
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