Question 73815
First, add the last two equations to eliminate both the y and the z. You get {{{3x=3}}}, which makes {{{x=1}}}
Then, add the first and last equation. You get {{{-3y+2z=0}}}
Now, we need to eliminate the x from one other equation so plug x into the last equation to get {{{y+z=5}}}
Now multiply this by 2 in order to eliminate the z. {{{-3y+2z=0<br>2t+2z=10}}}
Subtract the two to get {{{y=2}}}
Now just plug x and y in one of the equations to get {{{z=3}}}