Question

1/5+0,2•5/7= ПОЛНЫМ ОТВЕТОМ! (Одна целая 2/5-1/3) •5/8=ПОЛНЫМ ОТВЕТОМ!

Answer 1

1) $\frac{1}{5} + 2\frac{1}{10} * \frac{5}{7} = \frac{21}{10} * \frac{5}{7} = \frac{1}{5} + \frac{3}{2} = \frac{2}{10} + \frac{15}{10} = \frac{17}{10} = 1,7$

НОЗ: 10.

2) $(1\frac{2}{5} - \frac{1}{3}) * \frac{5}{8} = \frac{7}{5} - \frac{1}{3} = \frac{21}{15} - \frac{5}{15} = \frac{16}{15} * \frac{5}{8} = \frac{2}{3}$

НОЗ: 15.

Answer 2

Let's solve the equation step by step:

1/5 + 0.2 * 5/7 = 1/5 + 1/7 = (7/35) + (5/35) = 12/35

So the answer to the first part of the equation is 12/35.

Now let's solve the second part:

1 2/5 - 1/3 = (5/5) + (2/5) - (1/3) (Convert 1 2/5 to an improper fraction) = (15/15) + (6/15) - (5/15) (Find a common denominator) = 16/15

So the first part of the equation equals 16/15.

Multiplying 16/15 by 5/8, we get:

16/15 * 5/8 = (165)/(158) = 4/3

Therefore, the full solution to the equation is:

1/5 + 0.2 * 5/7 = 12/35 (1 2/5 - 1/3) * 5/8 = 4/3