Question

55.
If a.b.c are non zero real numbers and if the system of equations (a – 1)x = y + z,
(6 - 1)y = 2 + x, (c-1)z= x + y has a non trivial solution, then ab + bc + ca
b)/abc
c)3abc
d)1/a+1/b+1/c
a) abc
​

Answer 1

Answer:

its ans is c ,abc

Step-by-step explanation:

it is too easy to solve it