Question

1)3 2/5 + 4 1/5 -2 2/5 - 3 4/5. 2)3/7+2/7= Помогите!!!!

Answer 1

Пошаговое объяснение:

$1) 3\frac{2}{5} + 4\frac{1}{5} - 2\frac{2}{5} - 3\frac{4}{5} = \frac{17}{5} + \frac{21}{5} - \frac{12}{5} - \frac{19}{5} = \frac{7}{5}$\\\\

$2) \frac{3}{7} + \frac{2}{7} = \frac{5}{7}$

Answer 2

Ответ на фото. Если непонятно, то пиши.

Answer 3

1. To add and subtract mixed numbers, you need to convert them to improper fractions and then perform the calculations.

Let's convert the mixed numbers to improper fractions first:

3 2/5 = (3 * 5 + 2) / 5 = 17/5 4 1/5 = (4 * 5 + 1) / 5 = 21/5 2 2/5 = (2 * 5 + 2) / 5 = 12/5 3 4/5 = (3 * 5 + 4) / 5 = 19/5

Now we can perform the calculations:

17/5 + 21/5 - 12/5 - 19/5 = (17 + 21 - 12 - 19) / 5 = 7/5

Therefore, the result is 7/5.

2. To add fractions with the same denominator, you simply add the numerators and keep the denominator the same.

3/7 + 2/7 = (3 + 2) / 7 = 5/7

So, the result is 5/7.