Solve for x, y, z
z=9
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2x=21-3
Consider the first equation. Subtract 3 from both sides.
2x=18
Subtract 3 from 21 to get 18.
x=\frac{18}{2}
Divide both sides by 2.
x=9
Divide 18 by 2 to get 9.
y=9
Consider the second equation. Insert the known values of variables into the equation.
z=9
Consider the third equation. Insert the known values of variables into the equation.
x=9 y=9 z=9
The system is now solved.
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