Question

1065 номер дам 20 балов

Answer 1

1/2 = 1/4 + 1/6 + 1/12
1/4 = 1/8 + 1/12 + 1/24
1/6 = 1/12 + 1/18 + 1/36
1/8 = 1/16 + 1/24 + 1/48
1/10 =1/20 + 1/30 + 1/60