Răspuns :
15 *6 =90
440-90=350
350 :10=35 (costa o carte )
35+15=50 (costa un album )
440-90=350
350 :10=35 (costa o carte )
35+15=50 (costa un album )
4c+6a=440
1a=c+15
4c+6(c+15)=440
4c+6c+90=440
10c=440-90
10c=350
c=350:10
c=35(0 carte)
a=35+15
a=50(un album)
1a=c+15
4c+6(c+15)=440
4c+6c+90=440
10c=440-90
10c=350
c=350:10
c=35(0 carte)
a=35+15
a=50(un album)