2/7+5/21+32/49+9/14= помогите пожалуйста

Question

2/7+5/21+32/49+9/14= помогите пожалуйста

Answer 1

1) 2/7 + 5/21 = 6/21 + 5/21 = 11/21
2) 11/21 + 9/14 = 22/42 + 27/42 = 49/42 = 1 7/42 = 1 1/6
3) 1 1/6 + 32/49 = 1 49/294 + 192/294 = 1 241/294