Question

Solve for a 5/a - 2/1-a = 2/a-1
a=0
a=-1
a=1
none

Answer 1

hello :

`(5)/(a) - (2)/(1-a) = (2)/(a-1) = (5)/(a)+ (2)/(a-1) = (2)/(a-1) = (5(a-1)+2a)/(a(a-1)) = (2a)/(a(a-1)) (a \\eq 1 , a \\eq 0)`
5a-5 +2a =2a
5a =5
a=1 ( refused)
conclusion : none