Question

(3/7-1/21)×14 Помогите пожалуйста!

Answer 1

Ответ:

Пошаговое объяснение:

(3/7-1/21)×14=

НОК:7,21=21

21÷7=3

3/7×3=9/21

9/21-1/21=8/21

8/21×14=16/3

Answer 2

To solve the expression (3/7 - 1/21) × 14, we can follow the order of operations, which is commonly known as PEMDAS (Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction). Let's break it down step by step:

1. Simplify the expression inside the parentheses: - 3/7 - 1/21 To subtract fractions, we need to have a common denominator. In this case, the common denominator is 21. So, we can rewrite the expression as: - (3/7) - (1/21) = (9/21) - (1/21) = 8/21

2. Multiply the result by 14: - (8/21) × 14 To multiply fractions, we simply multiply the numerators and denominators. So, we have: - (8/21) × 14 = (8 × 14) / 21 = 112/21

Therefore, the result of the expression (3/7 - 1/21) × 14 is 112/21.

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