Solve for x, y, z
z=-7
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-2x=8
Consider the first equation. Add 8 to both sides. Anything plus zero gives itself.
x=\frac{8}{-2}
Divide both sides by -2.
x=-4
Divide 8 by -2 to get -4.
y=2+2\left(-4\right)-1
Consider the second equation. Insert the known values of variables into the equation.
y=2-8-1
Multiply 2 and -4 to get -8.
y=-6-1
Subtract 8 from 2 to get -6.
y=-7
Subtract 1 from -6 to get -7.
z=-7
Consider the third equation. Insert the known values of variables into the equation.
x=-4 y=-7 z=-7
The system is now solved.
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