Question

2) 14 - 5 12/17 3) 25 + 3 4/17 6) 5 /18 - 1/12 8) 18 7/10 - 12 9) 2 4/7 × 49 10) 2 1/4 × 1 1/3 11)12 1/4 × 2 2/7 12) (15-9 2/3) × (1- 17/32) НАПИСАЛА НЕ ВСЕ ПОТОМУ ЧТО НЕКОТОРЫЕ ЛЁГКИЕ!!! соссссс

Answer 1

Пошаговое объяснение:

2)8 5/17

3) 28 4/17

6) 7/36

8)6 7/10

9) 126

10) 8 1/4

11) 28

12) 2 1/2

Answer 2

1. To calculate 14 - 5 12/17, first convert the mixed number 5 12/17 to an improper fraction:

5 12/17 = (5 * 17 + 12) / 17 = 97/17

Now, subtract 97/17 from 14:

14 - 97/17 = (14 * 17/17) - 97/17 = (238/17) - (97/17) = (238 - 97)/17 = 141/17

Therefore, 14 - 5 12/17 is equal to 141/17.

2. To calculate 25 + 3 4/17, first convert the mixed number 3 4/17 to an improper fraction:

3 4/17 = (3 * 17 + 4) / 17 = 55/17

Now, add 25 and 55/17:

25 + 55/17 = (25 * 17/17) + 55/17 = (425/17) + (55/17) = (425 + 55)/17 = 480/17

Therefore, 25 + 3 4/17 is equal to 480/17.

3. To calculate 5/18 - 1/12, we need to find a common denominator. The least common multiple of 18 and 12 is 36.

Converting the fractions to have a denominator of 36:

5/18 = (5 * 2)/ (18 * 2) = 10/36

1/12 = (1 * 3)/ (12 * 3) = 3/36

Now, subtract 3/36 from 10/36:

10/36 - 3/36 = (10 - 3)/36 = 7/36

Therefore, 5/18 - 1/12 is equal to 7/36.

4. To calculate 18 7/10 - 12, first convert the mixed number 18 7/10 to an improper fraction:

18 7/10 = (18 * 10 + 7) / 10 = 187/10

Now, subtract 187/10 from 12:

12 - 187/10 = (12 * 10/10) - 187/10 = (120/10) - (187/10) = (120 - 187)/10 = -67/10

Therefore, 18 7/10 - 12 is equal to -67/10.

5. To calculate 2 4/7 × 49, first convert the mixed number 2 4/7 to an improper fraction:

2 4/7 = (2 * 7 + 4) / 7 = 18/7

Now, multiply 18/7 by 49:

(18/7) * 49 = (18 * 49) / 7 = 882/7 = 126

Therefore, 2 4/7 × 49 is equal to 126.

6. To calculate 2 1/4 × 1 1/3, first convert the mixed numbers to improper fractions:

2 1/4 = (2 * 4 + 1) / 4 = 9/4

1 1/3 = (1 * 3 + 1) / 3 = 4/3

Now, multiply 9/4 by 4/3:

(9/4) * (4/3) = (9 * 4) / (4 * 3) = 36/12 =