Question

3 3/7×1 1/6-7/15:21/40помогите пожалуйста​

Answer 1

Ответ:

3 1/9

Пошаговое объяснение:

24/7 * 7/6 - 7/15 * 40/21 =

24/1 * 1/6 - 1/15 * 40/3 = 4 - 1/3 * 8/3 = 4 - 8/9 = 4/1 - 8/9 = 36/9 - 8/9 = 28/9 = 3 1/9

Answer 2

Ответ:

Пошаговое объяснение:

3 3/7×1 1/6-7/15:21/40

Для начала ЦЕЛЫЕ числа переводим в неправильную дробь

24* 7 - 7 *40    СОКРАЩАЕМ

7     6  15  21

4-8/9=3  9/9-8/9=3 1/9

Answer 3

To solve the expression 3 + 3/7 × 1 + 1/6 - 7/15 ÷ 21/40, we need to follow the order of operations, also known as PEMDAS (Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction).

Let's break down the expression step by step:

1. Multiplication and Division: - We have the following multiplication and division operations: - 3/7 × 1 = 3/7 - 7/15 ÷ 21/40 = (7/15) × (40/21) = 280/315 = 8/9

2. Addition and Subtraction: - Now, let's perform the addition and subtraction operations: - 3 + 3/7 + 1/6 - 8/9 - To add or subtract fractions, we need to find a common denominator. In this case, the common denominator is 42. - Converting all the fractions to have a denominator of 42: - 3 = 3/1 = 126/42 - 3/7 = (3/7) × (6/6) = 18/42 - 1/6 = (1/6) × (7/7) = 7/42 - 8/9 = (8/9) × (42/42) = 336/378 - Now we can add the fractions: - 126/42 + 18/42 + 7/42 - 336/378 = (126 + 18 + 7 - 336)/42 = -185/42

Therefore, the value of the expression 3 + 3/7 × 1 + 1/6 - 7/15 ÷ 21/40 is -185/42.

Please let me know if you need any further assistance!