Question

6Вычисли.4+3 3/9 19 3/7-17 14 1/8+1419 8/10-3 14 1/9+6 4/9 8 5/6-4 3/6​

Answer 1

Ответ:

7 3/9

16 8/10

2 3/7

20 5/9

253/8

4 1/3

Пошаговое объяснение:

ДУМАЮ ЭТО ПРАВИЛЬНО

Answer 2

To solve this expression, let's break it down step by step:

1. $4 + \frac{3}{9}$

   • Convert $3/9$ to its simplest form, which is $1/3$.
   • $4 + \frac{1}{3} = \frac{12}{3} + \frac{1}{3} = \frac{13}{3}$

2. $19 \frac{3}{7} - 17$

   • Convert $19 \frac{3}{7}$ to an improper fraction: $19 \frac{3}{7} = \frac{(7 \times 19) + 3}{7} = \frac{140 + 3}{7} = \frac{143}{7}$.
   • $\frac{143}{7} - 17$
   • Convert $17$ to a fraction over $1$: $17 = \frac{17}{1}$.
   • $\frac{143}{7} - \frac{17}{1}$
   • To subtract, we need a common denominator. The common denominator here is $7$.
   • $\frac{143}{7} - \frac{17 \times 7}{1 \times 7} = \frac{143 - 119}{7} = \frac{24}{7} = 3 \frac{3}{7}$.

3. $14 \frac{1}{8} + 1419 \frac{8}{10}$

   • $14 \frac{1}{8} = \frac{113}{8}$ (improper fraction form).
   • $1419 \frac{8}{10} = 1419 \frac{4}{5} = \frac{(5 \times 1419) + 4}{5} = \frac{7095 + 4}{5} = \frac{7099}{5}$.
   • $\frac{113}{8} + \frac{7099}{5}$
   • To add, we need a common denominator. The common denominator here is $40$ (since $8$ and $5$ have a common multiple of $40$).
   • $\frac{113 \times 5}{8 \times 5} + \frac{7099 \times 8}{5 \times 8} = \frac{565}{40} + \frac{56792}{40} = \frac{57357}{40} = 1433 \frac{37}{40}$.

4. $3 \frac{1}{9} + 6 \frac{4}{9}$

   • $3 \frac{1}{9} = \frac{28}{9}$ (improper fraction form).
   • $6 \frac{4}{9} = \frac{58}{9}$ (improper fraction form).
   • $\frac{28}{9} + \frac{58}{9} = \frac{86}{9} = 9 \frac{5}{9}$