Question

Corina si Maria au impreuna 160 abtipilduri.Marina si Irina au impreuna 134 de abtipilduri.Corina si Irina au impreuna 146 abtipilduri
.Cate abtipilduri are fiecare ?

Answer 1

C+M =160 =>I=220-160 I=60 M+I=134 =>C=220-134 C=86 C + I=146 =>M=220-146 M=74 --------------- 2(C+M+I)=440 C+M+I=220

Answer 2

160:2=80  134:2=67 146:2=73 80-73=7 80+7=87  87+73=160 73-67=6 67-6=61 61+73=134 
corina=73
maria=87
marina=61
irina=73