Question

解方程5/(x+1)-10/(x+10)=2/(3x-3)

Answer 1

5/(x+1)-10/(x+10)=2/(3x-3)

5/(x+1)-2/3(x-1)=10/(x+10)

[15(x-1)-2(x+1)]/(x^2-1)=10/(x+10)

(13x-13)/(x-1)(x+1)=10/(x+10)

13/(x+1)=10/(x+10)

10x+10=13x+130

3x=-30

x=-10