Question

(2/7+1/4) x 2/5 расписать по действиям

Answer 1

$( \frac{2}{7} + \frac{1}{4} ) \times \frac{2}{5} = \frac{3}{14} \\ 1) \frac{2}{7} + \frac{1}{4} = \frac{8 + 7}{28} = \frac{15}{28} \\ 2) \frac{15}{28} \times \frac{2}{5} = \frac{30}{140} = \frac{3}{14}$

надеюсь хоть как-то помогла

Answer 2

1)2/7+1/4=8/28+7/28=15/28
2)15/28 х 2/5=30/140=3/14

Answer 3

Sure, let's solve the expression step by step:

Step 1: Add the fractions 2/7 and 1/4. To add fractions, you need to have a common denominator. In this case, the common denominator is 28 (the least common multiple of 7 and 4). We can rewrite the fractions with the common denominator:

2/7 = (2 * 4) / (7 * 4) = 8/28 1/4 = (1 * 7) / (4 * 7) = 7/28

Now, add the fractions together:

2/7 + 1/4 = 8/28 + 7/28 = (8 + 7) / 28 = 15/28

Step 2: Multiply the result from Step 1 by 2/5. To multiply fractions, simply multiply the numerators together and the denominators together:

(15/28) x 2/5 = (15 x 2) / (28 x 5) = 30/140

Step 3: Simplify the fraction in its lowest terms (if possible). To simplify the fraction, find the greatest common divisor (GCD) of the numerator and denominator, and then divide both the numerator and the denominator by the GCD.

The GCD of 30 and 140 is 10.

(30/10) / (140/10) = 3/14

So, the simplified result of (2/7 + 1/4) x 2/5 is 3/14.