### Home > CCA2 > Chapter 10 > Lesson 10.3.1 > Problem 10-153

10-153.

Solve the system at right for (

*x*,*y*,*z*). Homework Help ✎2

*x*+*y*− 2*z*= 0

*x*−*y*− 4*z*= −3

3*x*+ 2*y*+ 2*z*= −1

Add the first and second equation to eliminate the *y*-term.

Multiply the second equation by 2 and then add it to the last equation.

Use your equations from Steps 1 and 2 to solve a system with *x* and *z*.

Then use your *x*- and *z*-values to solve for *y* in any of the three given equations.