Răspunsuri

2014-02-13T17:11:29+02:00
11 x a = 14 x (a-3)
11 x a = 14 x a - 42
14 x a - 11 x a = 42
3 x a = 42
a = 14 zile
14 x 11 = 154 pagini
10 4 10
2014-02-13T20:17:18+02:00
14x3=42      42:14=3         14x11=154pagini
14 4 14