Question 1015299
3x-y+z=3    eq1
-×+y+2z=0  eq2
-5×+3y+2z=-2  eq3

We need to combine 2 sets of equations to eliminate one variable. 

-3×+3y+6z=0   (this is eq2 *3)
3x-y+z=3    eq1

2y+7z=3  we added the two equations

5×-5y+-10z=0  (eq2 * -5)
-5×+3y+2z=-2  eq3

-2y-8z=-2  we added the 2 equations
2y+7z=3

-z=1  so z=-1

2y-7=3

2y=10  so y=5

-×+y+2z=0

-x+5-2=0 

-x+3=0, and x=3

3,5,-1

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