Question

efectuoati scaderile 7 supra lui 12 - 5 supra 12 b)3 supra 4 -1 supra 5 c)7 supra 8 -5 supra 6 d)1 intreg -3 supra 7 e)3 intreg - 7 supra 10 f)3 intreg si 5 supra 12 -1 intreg si 3supra 8 g)7 intreg si 3 supra 10 -3intreg si 7 supra 15 h) 17 supra 18 -4 supra 9 -1 supra 6 VA ROG DAU COROANA

Answer 1

7/12-5/12=2/12=1/6
3/4-1/5=15/20-4/20=11/20
7/8-5/6=21/24-20/24=1/24
1-3/7=7-3/7=4/7
3-7/10=30-7/10=23/10
3 si 5/12-1 si 3/8=41/12-11/8=82/24-33/24=49/24
7 si 3/10-3 si 7/15=73/10-52/15=219/30-104/30=115/30=23/6
17/18-4/9-1/6=17/18-8/18-3/18=6/18=1/3