# algebra

posted by
**PLEASE NEED HELP**
.

solve by addition method

x +3y +z =6

3x + y – z = -2

2x +2y – z = 1

thanks

posted by
**PLEASE NEED HELP**
.

solve by addition method

x +3y +z =6

3x + y – z = -2

2x +2y – z = 1

thanks