Question

1/4+3/4:(0,8-2,25-2,05)

Answer 1

Пошаговое объяснение:

$\frac{1}{4} + \frac{3}{4} \div ( \ 0.8 - 2.25 - 2.05) \\ \frac{1}{4} + \frac{3}{4} \div ( - 3.5) \\ \frac{1}{4} + \frac{3}{4} \div ( - \frac{7}{2} ) \\ \frac{1}{4} - \frac{3}{4} \times \frac{2}{7} \\ \frac{1}{4} - \frac{3}{2} \times \frac{1}{7} \\ \frac{1}{4} - \frac{3}{14} \\ \frac{1}{28}$

Answer 2

To simplify the expression 1/4 + 3/4:(0.8 - 2.25 - 2.05), you should follow the order of operations (PEMDAS/BODMAS), which stands for Parentheses/Brackets, Exponents/Orders (i.e., powers and square roots, etc.), Multiplication and Division (left-to-right), and Addition and Subtraction (left-to-right).

In this case, you should first calculate the expression within the parentheses and then proceed with the division and addition:

1. Start with the expression inside the parentheses: 0.8 - 2.25 - 2.05 = -3.5

2. Now, you have the expression: 1/4 + 3/4:(-3.5)

3. Next, perform the division: 3/4 divided by -3.5 = 3/4 * (-1/3.5)

4. Now, multiply the fractions: (3/4) * (-1/3.5) = (3 * -1) / (4 * 3.5) = -3/14

5. Finally, add the result to 1/4: 1/4 + (-3/14)

To add these fractions, you need a common denominator, which is 28. So:

(1/4) * (7/7) + (-3/14) * (2/2) = 7/28 - 6/28

Now, subtract the fractions:

(7/28) - (6/28) = 1/28

So, the simplified result is 1/28.