Question

3 3/7×14/19-3 5/8÷7,25+8,4​

Answer 1

вот, вроде верно........

Answer 2

Відповідь:

-6 71/190

Вопрос:

Ето точно правильный пример?

Answer 3

To calculate the expression 3 3/7 × 14/19 - 3 5/8 ÷ 7.25 + 8.4, you can follow the order of operations (PEMDAS/BODMAS).

PEMDAS/BODMAS stands for:

1. P/B - Parentheses/Brackets
2. E/O - Exponents/Orders (i.e., powers and square roots, etc.)
3. MD - Multiplication and Division (left-to-right)
4. AS - Addition and Subtraction (left-to-right)

First, let's deal with the mixed numbers:

3 3/7 = (7 * 3 + 3) / 7 = (21 + 3) / 7 = 24/7 3 5/8 = (8 * 3 + 5) / 8 = (24 + 5) / 8 = 29/8

Now, you can rewrite the expression:

(24/7) × (14/19) - (29/8) ÷ 7.25 + 8.4

Now, apply the order of operations:

1. Start with multiplication and division from left to right: (24/7) × (14/19) ≈ 24/7 × 14/19 ≈ 336/133 (29/8) ÷ 7.25 ≈ 29/8 ÷ 29/4 ≈ (29/8) * (4/29) ≈ 1/2

2. Now, the expression becomes: 336/133 - 1/2 + 8.4

3. Next, add and subtract from left to right: 336/133 - 1/2 ≈ (336 * 2 - 133) / (133 * 2) ≈ (672 - 133) / 266 ≈ 539/266 539/266 + 8.4 ≈ (539 + 8.4 * 266) / 266 ≈ (539 + 2244) / 266 ≈ 2783/266

So, the final result is 2783/266.