Найдите разность дробей и провертье результаи сложением: 3/10-2/25; 2/9-2/15; 17/30-7/24; 4/25-4/35.

3/10 - 2/25 = 15/50 - 4/50 = 11/50
2/9 - 2/15 = 10/45 - 6/45 = 4/45
17/30 - 7/24 = 68/120 - 35/120 = 33/120
4/25 - 4/35 = 28/175 - 20/175 = 8/175

3/10-2/25=15/50-4/50=11/50
2/9-2/15=10/45-6/45=4/45
17/30-7/24=68/120-35/120=33/120
4/25-4/35=28/175-20/175=8/175