Respuestas

2012-10-07T18:43:59+02:00

(x+3)/(x+2)+(2x+3)/(x+2) =0

("los denominadores (x+2) se tachan)

x+3+2x+3=0

x+2x+3+3=0

3x+6=0

3x=-6

x=-6/3  =} -2