[" If the lines "ax+y+1=0,x+by+1=0" and "],[x+y+c=0(a,b,c" being distinct and "],[" different from "1)" are concurrent,then "],[((1)/(1-a))+((1)/(1-b))+((1)/(1-c))=]

If the lines ax+y+1=0,x+by+1=0 and x+y+c=0(a,b, being distinct and different from 1) are concurrent,then prove that (1)/(1-a)+(1)/(1-b)+(1)/(1-c)=1

If the lines a x+y+1=0,x+b y+1=0, and x+y+c=0(a , b , c being distinct and different from 1) are concurrent, then (1/(1-a))+(1/(1-b))+(1/(1-c))= (a)0 (b) 1 (c) 1/((a+b+c)) (d) none of these

If the lines a x+y+1=0,x+b y+1=0 and x+y+c=0(a ,b ,c being distinct and different from 1) are concurrent, then prove that 1/(1-a)+1/(1-b)+1/(1-c)=1.

If the lines a x+y+1=0,x+b y+1=0 and x+y+c=0(a ,b ,c being distinct and different from 1) are concurrent, then prove that 1/(1-a)+1/(1-b)+1/(1-c)=1.

If the lines a x+y+1=0,x+b y+1=0 and x+y+c=0(a ,b ,c being distinct and different from 1) are concurrent, then prove that 1/(1-a)+1/(1-b)+1/(1-c)=1.

If the lines a x+y+1=0,x+b y+1=0, and x+y+c=0(a , b , c being distinct and different from 1) are concurrent, then (1/(1-a))+(1/(1-b))+(1/(1-c)) is (a) 0 (b) 1 1/((a+b+c)) (d) none of these

If the lines a x+y+1=0,x+b y+1=0a n dx+y+c=0(a ,b ,c being distinct and different from 1) are concurrent, then prove that 1/(1-a)+1/(1-b)+1/(1-c)=1.

If the lines a x+y+1=0,x+b y+1=0a n dx+y+c=0(a ,b ,c being distinct and different from 1) are concurrent, then prove that 1/(1-a)+1/(1-b)+1/(1-c)=1.

If the lines ax+y+1=0, x+by+1=0 and x+y+c=0 (a,b and c being distinct and different from 1) are concurrent the value of (a)/(a-1)+(b)/(b-1)+(c)/(c-1) is

If the lines ax+y+1=0, x+by+1=0 and x+y+c=0 (a,b and c being distinct and different from 1) are concurrent the value of (a)/(a-1)+(b)/(b-1)+(c)/(c-1) is