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