Răspunsuri

2014-10-31T21:34:28+02:00
3a+7b+4c=
3a+3b+4b+4c=
3 (a+b)+4(b+c)=
3*20+4*30=
60+120=180
raspunde
huh? ti-am explicat in doua feluri. unde sunt injuriile?
ce inseamna injuriile?
raspunde
heloo
Cel mai inteligent răspuns!
2014-10-31T21:35:43+02:00
3a+7b+4c=(3a+3b)+(4b+4c)=3(a+b)+4(b+c)=3x20+4x30=60+120=180
2 4 2