Пошаговое объяснение:
(5. 2/5 - 3. 3/4) + (11. 9/15 -
8. 9/20) =
(5. 24/60 - 3. 45/60) +
(11. 36/60 - 8. 27/60) =
(4. 84/60 - 3. 45/60) +
3. 9/60 =
1. 39/60 + 3. 9/60 =
4. 48/60 = 4. 4/5
ответ: 4. 4/5
4 4/5
(5 2/5 - 3 3/4) + (11 9/15 - 8 9/20) =
1) 5 2/5 - 3 3/4 = 1 13/20
2) 11 9/15- 8 9/20 = 3 3/20
3) 1 13/20 + 3 3/20 = 4 4/5
Пошаговое объяснение:
(5. 2/5 - 3. 3/4) + (11. 9/15 -
8. 9/20) =
(5. 24/60 - 3. 45/60) +
(11. 36/60 - 8. 27/60) =
(4. 84/60 - 3. 45/60) +
3. 9/60 =
1. 39/60 + 3. 9/60 =
4. 48/60 = 4. 4/5
ответ: 4. 4/5
4 4/5
Пошаговое объяснение:
(5 2/5 - 3 3/4) + (11 9/15 - 8 9/20) =
1) 5 2/5 - 3 3/4 = 1 13/20
2) 11 9/15- 8 9/20 = 3 3/20
3) 1 13/20 + 3 3/20 = 4 4/5