Вычислите 5/2+2/9... 10/21+9/14

Question

Вычислите 5/2+2/9... 10/21+9/14

Answer 1

5/2 + 2/9 = 45/18 + 4/18 = 49/18 = 2 13/18,

10/21 + 9/14 = 20/42 + 27/42 = 47/42 = 1 5/42