If x,y ,and z are positive real numbers such that x+y-z =50 , y-z+x =60 , and z-x+y = 80, then find ...
If x,y ,and z are positive real numbers such that x+y-z =50 , y-z+x =60 , and z-x+y = 80, then find the z value?
Answer/Solution
5
Steps/Work
x+y-z =50, ------1)
y-z+x =60 , ------2)
z-x+y = 80------3)
from (1)&(2)
2z=10
z=5
correct option is C
y-z+x =60 , ------2)
z-x+y = 80------3)
from (1)&(2)
2z=10
z=5
correct option is C