Question

(5/7-3/7)-2/21=3Плиис решение​

Answer 1

Ответ:

Пошаговое объяснение:

1. 5/7-3/7=2/7

2. 2/7-2/21=6/21-2/21=4/21 , но не как не 3

Answer 2

To solve the equation (5/7 - 3/7) - 2/21 = 3π, we can simplify the left-hand side of the equation step by step:

Step 1: Simplify the fractions on the left-hand side: (5/7 - 3/7) - 2/21 = 2/7 - 2/21

Step 2: Find a common denominator for 7 and 21, which is 21: 2/7 - 2/21 = (2 * 3/3 * 7) - (2/21) = 6/21 - 2/21

Step 3: Combine the fractions with the same denominator: 6/21 - 2/21 = (6 - 2)/21 = 4/21

So, the left-hand side of the equation simplifies to 4/21:

(5/7 - 3/7) - 2/21 = 4/21

Now we have the equation 4/21 = 3π. To solve for π, we can isolate it:

4/21 = 3π

To isolate π, we'll divide both sides of the equation by 3:

(4/21) / 3 = (3π) / 3

4/63 = π/1

Finally, we can simplify the left-hand side:

4/63 = π

Therefore, the solution is π = 4/63.