$0 = \frac2{r-1}-\frac3{r+4}+\frac1{r+5}$
So to my understanding I could give them all the same denominator by multiplying their denominators with each others denominators and numerators. Or could I just flip them all around? But that would mean that 0 would be a denominator and I don't think I'm allowed to do that :p. Can someone please help me out?
Thanks!