Question

Вычислите 7/13+1/13  3/10+1/7 9/25+2/5 1/25+3/35 5/7-2/7 7/9-1/4 7/8-5/7 7/24-7/36

Answer 1

7/13+1/13=8/13
3/10+1/7=31/70
9/25+2/5=19/25
5/7-2/7=3/7
7/9-1/4=19/36
7/8-5/7=9/56
7/24-7/36=7/72