Question

Пажалуста памагите памагите​

Answer 1

Ответ:

1. 1)  1/2 + 1/3 = 3/6 + 2/6 = 5/6

  2) 5/6  - 1/4 = 10/12 - 3/12 = 7/12

2. 1) 1/8 + 1/7  = 7/56 + 8/56 = 15/56

   2) 4/5 - 15/56 = 224/280 - 75/280 = 149/280

3. 1) 11/12 - 10/11 = 121/132 - 120/132 = 1/132

   2) 2/11 + 1/132 = 24/132 + 1/132 = 25/132

4) 1) 3/7 - 2/13 =  39/91 - 14/91 = 25/91

   2) 25/91 + 7/13 = 25/91 + 49/91 = 74/91