Question

Solve the system x+2z=30 y+z=12 z=1

Answer 1

x=28 y=11 z=1

Explanation:

plug in 1 for z in x+2z=30 to get x+2(1)=30. Then you should get x+2=30 which is x=28.

Then, plug 1 in for the second equation of y+z=12 so you get y+1=12. Then you should get y=11.