Question

3:3 целых 3/4+2 целых 2/5*2 целых 1/2-3 целых 5/6​

Answer 1

Переводим смешанные дроби в неправильные:

$3 : \frac{15}{4} + \frac{12}{5} * \frac{5}{2} - \frac{23}{6} = 2,96$

1) $\frac{3}{1} * \frac{4}{15} = \frac{4}{5}$

2) $\frac{12}{5} * \frac{5}{2} = \frac{6}{1}$

3) $\frac{4}{5} + \frac{6}{1} = \frac{4}{5} + \frac{30}{5} = \frac{34}{5}$

4) $\frac{34}{5} - \frac{23}{6} = \frac{204}{30} - \frac{115}{30} = \frac{89}{30} = 2,96$

Ответ: 2,96.

Answer 2

To solve the expression, we follow the order of operations (PEMDAS - Parentheses, Exponents, Multiplication and Division, Addition and Subtraction):

Step 1: Perform multiplication and division from left to right. Step 2: Perform addition and subtraction from left to right.

Let's calculate the expression step by step:

1. 3/4 + 2 = 2 3/4 (We added 2 to the fractional part)
2. 2 3/4 * 2 = 5 1/2 (We multiplied the whole number and the fraction)
3. 5 1/2 - 3 = 2 1/2 (We subtracted 3 from the whole number)

So, the final result is 2 1/2.