Question 356888
X + 2Y + Z = 22

X + Y = 15 --------> Y=15-X

3X + Y + Z = -37




X + 2Y + Z = 22
X + 2(15-X) + Z = 22
X+30-2X+Z=22
-X+Z=-8
Z=X-8



3X + Y + Z = -37
3X + 15-X + X-8 = -37
3X+7=-37
3X=-44
X=-44/3


Y=15-X=15-(-44/3)=89/3
Y=89/3


Z=X-8=-44/3-8=-68/3
Z=-68/3