#F
2x + y + 2z = 15
x + 2y + 2z= 16 ...(-)
x - y = - 1
.
3x + 3y + 2z = 23 ...(-)
-x - 2y = -8
-x - 2y =- 8 ...(+)
-3y = - 9
y = 3
x - y = -1
x- 3 = -1
x = 2
2(2) + 3 + 2(z)= 15
4 + 3 + 2z = 15
2z = 8
z= 4
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#F
2x + y + 2z = 15
x + 2y + 2z= 16 ...(-)
x - y = - 1
.
2x + y + 2z = 15
3x + 3y + 2z = 23 ...(-)
-x - 2y = -8
.
x - y = - 1
-x - 2y =- 8 ...(+)
-3y = - 9
y = 3
.
x - y = -1
x- 3 = -1
x = 2
.
2x + y + 2z = 15
2(2) + 3 + 2(z)= 15
4 + 3 + 2z = 15
2z = 8
z= 4