Question

Помогите пожалуйста ))

Answer 1

1/7-125/1000=1000-875/7000=115/7000
5/100:115/7000=5/100*7000/115=70/23
70/23+21/6=420+483/138=903/138=6-целых 75/138 

Answer 2

1/7 -1/8 = 1/56
 5 /100 : 1/56=2, 3
2 3/10+ 21/6 = 2 3/10 + 3 1/2 = 5 11/10 = 6,1