числитель 1 дроби:
1) 36 2/36 : 15 = 1298/36 * 1/15 = 649/270 = 2 109/270,
2) 8 2/3 * 7 = 26/3 * 7 = 182/3 = 60 2/3,
3) 2 109/270 + 60 2/3 = 2 109/270 + 60 180/270 =
= 62 289/270 = 63 19/270,
знаменатель 1 дроби:
4) 8 6/7 : 2 4/7 = 62/7 : 18/7 = 62/7 * 7/18 = 31/9 = 3 4/9,
5) 12 1/3 + 3 4/9 = 12 3/9 + 3 4/9 = 15 7/9,
значение 1 дроби:
6) 63 19/270 : 15 7/9 = 17029/270 : 142/9 = 17029/270 * 9/142 =
= 17029/4260 = 3 4249/4260,
числитель 2 дроби:
7) 2 3/8 : 3/4 = 19/8 * 4/3 = 19/6 = 3 1/6,
8) 24 * 7/9 = 56/3 = 18 2/3,
9) 3 1/6 + 18 2/3 = 3 1/6 + 18 4/6 = 21 5/6,
знаменатель 2 дроби:
10) 157 4/5 : 24 = 789/5 * 1/24 = 789/120 = 6 23/40,
11) 7 2/3 - 6 23/40 = 7 80/120 - 6 69/120 = 1 11/120,
значение 2 дроби:
12) 21 5/6 : 1 11/120 = 131/6 : 131/120 = 131/6 * 120/131 = 120/6 = 20,
сумма обеих слагаемых:
13) 3 4249/4260 + 20 = 23 4249/4260 -- ответ
числитель 1 дроби:
1) 36 2/36 : 15 = 1298/36 * 1/15 = 649/270 = 2 109/270,
2) 8 2/3 * 7 = 26/3 * 7 = 182/3 = 60 2/3,
3) 2 109/270 + 60 2/3 = 2 109/270 + 60 180/270 =
= 62 289/270 = 63 19/270,
знаменатель 1 дроби:
4) 8 6/7 : 2 4/7 = 62/7 : 18/7 = 62/7 * 7/18 = 31/9 = 3 4/9,
5) 12 1/3 + 3 4/9 = 12 3/9 + 3 4/9 = 15 7/9,
значение 1 дроби:
6) 63 19/270 : 15 7/9 = 17029/270 : 142/9 = 17029/270 * 9/142 =
= 17029/4260 = 3 4249/4260,
числитель 2 дроби:
7) 2 3/8 : 3/4 = 19/8 * 4/3 = 19/6 = 3 1/6,
8) 24 * 7/9 = 56/3 = 18 2/3,
9) 3 1/6 + 18 2/3 = 3 1/6 + 18 4/6 = 21 5/6,
знаменатель 2 дроби:
10) 157 4/5 : 24 = 789/5 * 1/24 = 789/120 = 6 23/40,
11) 7 2/3 - 6 23/40 = 7 80/120 - 6 69/120 = 1 11/120,
значение 2 дроби:
12) 21 5/6 : 1 11/120 = 131/6 : 131/120 = 131/6 * 120/131 = 120/6 = 20,
сумма обеих слагаемых:
13) 3 4249/4260 + 20 = 23 4249/4260 -- ответ