Răspuns:
21=8+3+1+..+1 (10 de 1)
21=6+4+1+..+1 (11de 1)
21=12+2+ 1+..+1 (7de1)
Explicație pas cu pas:
24=8*3(1 ..*1) cat e nevoie
24=6*4*1...*1 cat e nevoie
24=2*12*1 cat e nevoie
24=24*1 nu are sens 24>21
21=8+3+1+..+1 (10 de 1)
21=6+4+1+..+1 (11de 1)
21=12+2+ 1+..+1 (7de1)
