Ajutati-ma... Cei 546 de elevi ai unei svoli au plantat in parcul orasului petunii panselute si zambile. fiecare copil a plantat 3 flori si panselute + petunii =1212 si panselute + zambile = 1041 . cate flori de fiecare fel s-au plantat?

Răspuns :

a=petunii
b=panselute
c=zambile

546×3=1638(flori in total)
a+b+c=1638
b+a=1212
1212+c=1638
c=1638-1212=426(zambile)

b+c=1041
b+426=1041
b=1041-426=615(panselute)

a+b=1212
a=1212-615=597(petunii)

Verificare:
597+615+426=1638 (total flori)
546•3 =1638 flori plantate

a- panselute
b-petunii
c-zambile

a+b+c=1638
a+b=1212
a+c=1041

1212+c=1638
c=426

a+426=1041
a=615

615+b=1212
b=597

597+615+426=1638