Solve for x, y, z, a
a=7
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y=2\times 3+1
Consider the second equation. Insert the known values of variables into the equation.
y=6+1
Multiply 2 and 3 to get 6.
y=7
Add 6 and 1 to get 7.
z=7
Consider the third equation. Insert the known values of variables into the equation.
a=7
Consider the fourth equation. Insert the known values of variables into the equation.
x=3 y=7 z=7 a=7
The system is now solved.
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