Răspunsuri

2014-10-12T16:02:53+03:00
A*(b+c)=45
inlocuim b+c=15 in a*(b+c)=45 => a*15=45 => a=45/15 => a=3
2014-10-12T16:05:45+03:00
SE DA FACTOR COMUN A
AX(B+C)=45
AX15=45
A=45:15
A=3