Question

（3x+5)/(x+2)+(3x+26)/(x+9)=(3x+17)/(x+6)+(3x+14)/(x+5) 解方程

Answer 1

（3x+5)/(x+2) = [(3x+6) -1] /(x+2) =3 - 1/(x+2) 后面都类似化简

3- 1/(x+2) + 3 - 1/(x+9) = 3 -1/(x+6) + 3 -1/(x+5)

1/(x+2) + 1/(x+9) = 1/(x+6) + 1/(x+5)

(2x+11)/ (x+2)(x+9) =(2x+11)/ (x+6)(x+5)

2x+11 = 0

x = -5.5