1) 1/10 - 23/20 = 1/10 - (232)/(202) = 1/10 - 46/40 = (4/40) - (46/40) = -42/40 = -21/20
2) 1/5 - 41/50 = 1/5 - 41/50 = 10/50 - 41/50 = -31/50
3) 1/25 - 7/50 = 2/50 - 7/50 = -5/50 = -1/10
4) 1/2 - 13/50 = 25/50 - 13/50 = 12/50 = 6/25
5) 1/10 - 39/50 = 5/50 - 39/50 = -34/50 = -17/25
6) 1/4 - 51/20 = 5/20 - 51/20 = -46/20 = -23/10
Итак, решения задач:
1) -21/202) -31/503) -1/104) 6/255) -17/256) -23/10
1) 1/10 - 23/20 = 1/10 - (232)/(202) = 1/10 - 46/40 = (4/40) - (46/40) = -42/40 = -21/20
2) 1/5 - 41/50 = 1/5 - 41/50 = 10/50 - 41/50 = -31/50
3) 1/25 - 7/50 = 2/50 - 7/50 = -5/50 = -1/10
4) 1/2 - 13/50 = 25/50 - 13/50 = 12/50 = 6/25
5) 1/10 - 39/50 = 5/50 - 39/50 = -34/50 = -17/25
6) 1/4 - 51/20 = 5/20 - 51/20 = -46/20 = -23/10
Итак, решения задач:
1) -21/20
2) -31/50
3) -1/10
4) 6/25
5) -17/25
6) -23/10