Question

( 2 5/7 + 1 5/3) :4/7​

Answer 1

Пошаговое объяснение:

(2 5/7+1 5/3):4/7=(19/7+8/3):4/7=

=((57+56)/21)×7/4=113/21×7/4=113/12=

=9 5/12

Answer 2

Ответ:

$(2\frac{5}{7}+1\frac{5}{3}):\frac{4}{7}=( \frac{19}{7}+\frac{8}{3}):\frac{4}{7}= ( \frac{57}{21}+\frac{56}{21})*\frac{7}{4}= \frac{113}{21}*\frac{7}{4}= \frac{113}{3}*\frac{1}{4}=\frac{113}{12}=9\frac{5}{12}$

Answer 3

To solve the expression (2 5/7 + 1 5/3) ÷ 4/7, follow these steps:

Step 1: Add the mixed numbers 2 5/7 and 1 5/3.

First, find a common denominator for the fractions, which in this case is 21.

2 5/7 = (2 * 3/3) + (5/7) = 6/3 + 5/7 = (6 * 7/7) + (5/7) = 42/21 + 5/21 = 47/21

1 5/3 = (1 * 7/7) + (5/3) = 7/7 + 5/3 = 21/21 + 35/21 = 56/21

Now, add the two mixed numbers:

2 5/7 + 1 5/3 = 47/21 + 56/21 = (47 + 56)/21 = 103/21

Step 2: Divide the result by the fraction 4/7.

To divide fractions, multiply by the reciprocal of the divisor:

(103/21) ÷ (4/7) = (103/21) * (7/4)

Now, multiply the numerators and denominators:

(103 * 7) / (21 * 4) = 721/84

Finally, simplify the fraction by dividing both the numerator and denominator by their greatest common divisor, which is 7:

(721 ÷ 7) / (84 ÷ 7) = 103/12

So, the result of the expression (2 5/7 + 1 5/3) ÷ 4/7 is 103/12.