Question

(3/10-3/20) ×2 6/7-2/5:1,4​

Answer 1

Пошаговое объяснение:

Вот тебе ответ.........

Answer 2

Ответ:

$(\frac{3}{10} -\frac{3}{20} )*2\frac{6}{7}-\frac{2}{5}:1,4=\frac{1}{7}$

$1)\frac{3}{10} -\frac{3}{20} =\frac{6}{20} -\frac{3}{20} =\frac{3}{20}$

$2)\frac{3}{20} *2\frac{6}{7}=\frac{3}{20}*\frac{20}{7}=\frac{3*20}{20*7}=\frac{3}{7}$

$3)\frac{2}{5} :1,4=\frac{2}{5} :1\frac{4}{10} =\frac{2}{5} :\frac{14}{10}=\frac{2*10}{5*14} =\frac{2}{7}$

$4)\frac{3}{7} -\frac{2}{7} =\frac{1}{7}$

Answer 3

To solve the expression (3/10 - 3/20) × 2 ÷ (6/7 - 2/5:1,4), let's break it down step by step:

First, let's simplify the numerator of the fraction: 3/10 - 3/20 = (6/20) - (3/20) = 3/20

Now, let's simplify the denominator of the fraction: 6/7 - 2/5 = (30/35) - (14/35) = 16/35

Next, let's divide 2 by (6/7 - 2/5:1,4): 2 ÷ (6/7 - 2/5:1,4) = 2 ÷ (16/35) = 2 × (35/16) = 70/16

Finally, let's multiply the result by the numerator of the fraction: (3/10 - 3/20) × 2 ÷ (6/7 - 2/5:1,4) = (3/20) × (70/16) = 210/320 = 21/32

Therefore, the simplified result of the expression (3/10 - 3/20) × 2 ÷ (6/7 - 2/5:1,4) is 21/32.