Question

8 7/12+9 2/15-11 9/10

Answer 1

Ответ:

5 49/60

Пошаговое объяснение:

Переводим всё в неправильные дроби, ищем общий знаменатель:

$\displaystyle8 \frac{7}{12} + 9 \frac{2}{15} - 11 \frac{9}{10} = \frac{12 \cdot8 + 7}{12} + \frac{15 \cdot9 + 2}{15} - \frac{10 \cdot11 + 9}{10} = \frac{103}{12} + \frac{137}{15} - \frac{119}{10} = \frac{515 + 548 - 714}{60} = \frac{349}{60} = 5 \frac{49}{60} .$

Answer 2

Пошаговое объяснение:

1) 8 7/12 + 9 2/15 = 8 35/60 + 9 8/60 = 17 43/60

2) 17 43/60 - 11 9/10 = 17 43/60 - 11 54/60 = 16 103/60 - 11 54/60 = 5 49/60

Answer 3

To calculate the expression 8 7/12 + 9 2/15 - 11 9/10, we can follow these steps:

Step 1: Convert mixed numbers to improper fractions. 8 7/12 = (8 * 12 + 7) / 12 = 103/12 9 2/15 = (9 * 15 + 2) / 15 = 137/15 11 9/10 = (11 * 10 + 9) / 10 = 119/10

Step 2: Perform addition and subtraction of the fractions. 103/12 + 137/15 - 119/10

To add fractions, we need to find a common denominator. The common denominator for 12, 15, and 10 is 60.

(103/12) * (5/5) = 515/60 (137/15) * (4/4) = 548/60 (119/10) * (6/6) = 714/60

Now, the expression becomes: 515/60 + 548/60 - 714/60

Step 3: Combine the fractions. (515 + 548 - 714) / 60 = 349/60

Step 4: Simplify the fraction if possible. The fraction 349/60 cannot be simplified any further.

Therefore, the result of the expression 8 7/12 + 9 2/15 - 11 9/10 is 349/60.