le simplifici tu daca e nevoie
1) a) 56/10, 412/100, 3419/1000, 7/10, 5/10000, 105/100
b) 25/9
1/3, 122/99, 1233/999, 17/99
c) 11/90, 122/990, 111/900, 1022/900
2) a) 11/5
b) 23/7
c)94/9
d) 157/10
3) a)
x = 7
b) x = 279
c) x = 5/9 * 9 = 5
d) x = 5 / 0,45 = 5 / 9 / 20 = 100 / 9
4) a) 1/6 - 1/8 - 3/24 = -2/24
b) 4/9 + 6/5 - 12/15 = 20/45 + 54/45 - 36/45 = 38/45
c) 2,2 - 3,9 - 1 = -2,7
f) 6 - 7,8 + 1,8 = 0
