Răspunsuri

2014-11-01T18:05:22+02:00
[3 x 5*12+2 x (3 x 5)*12]:5*11=(3 x 5*12+2 x 3*12 x 5*12):5*11=5*12(3+2 x 3*12):5*11=5(3+2 x 3*12)