Q: $${3x+4y-2z+9=17},{7x+2y+11z+8=23}$$ and $$ {5x+9y+6z-4=18}$$ then – McqOptions

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1.	Q: $${3x+4y-2z+9=17},{7x+2y+11z+8=23}$$ and $$ {5x+9y+6z-4=18}$$ then what is the value of $$ {x+y+z-34}$$?
A.	-45
B.	-31
C.	-14
D.	-28
Answer» C. -14

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