Question 77166
(7)/(r-3) + (5)/(r-2) - (10r)/(r^2-5r+6)

7/r-3+5/r-2-10r/r^2-3r-2r+6

7/r-3+5/r-2-10r/r(r^2/r-3r/r)+2(-2r/2+2*3/2)

7/r-3+5/r-2-10r/r(r-3)+2(-r+3)

7/r-3+5/r-2-10r/(r-3)(r-2)

2r-29/(r-3)(r-2)