Carti................. Caiete.............. Ron
. 4...........................10....................246\×3
3............................8....................192\×4
1....................................................?
1.....................?
_____________________________
12..........................30...................738
12.........................32...................768
2. ................. 30
1.................... 30:2=15
1.......................................................(192-15×8):4=192-120:4=72:4=18
Răspuns:
Carte : C
Caiet : E
4C + 10E = 246 (×3)
3C + 8E = 192 (×4)
12C + 30E = 738
12C + 32E = 768
-2E = -30
E = 15
3C + 8(15) = 192
3C + 120 = 192
3C = 192 - 120
3C = 72
C = 24
