Question

9 1/4 *8-1 2/3*5 1/2 - 4 2/5*4 7/12 Решите по действиям, пожалуйста

Answer 1

1)9 1/4*8=37/4*8=74
2)1 2/3*5 1/2=5/3*11/2=55/6=9 1/6
3)4 2/5*4 7/12=22/5*55/12=121/6=20 1/6
4)9 1/6+20 1/6=29 2/6=29 1/3
5)74-29 1/3=44 2/3
ответ : 44 2/3

Answer 2

Calculation

To solve the given expression 9 1/4 * 8 - 1 2/3 * 5 + 1/2 - 4 2/5 * 4 7/12, we can follow the order of operations (PEMDAS: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction).

First, let's convert all the mixed numbers to improper fractions: - 9 1/4 = 37/4 - 1 2/3 = 5/3 - 4 2/5 = 22/5 - 4 7/12 = 55/12

Now, we can perform the calculations step by step:

1. 9 1/4 * 8: - Convert 9 1/4 to 37/4 - Multiply 37/4 by 8 - Result: 74

2. 1 2/3 * 5: - Convert 1 2/3 to 5/3 - Multiply 5/3 by 5 - Result: 25/3

3. 1/2 - 4 2/5: - Convert 4 2/5 to 22/5 - Subtract 1/2 from 22/5 - Result: -19/10

4. 74 - 25/3 + (-19/10) * 55/12: - Perform the operations in the order of operations (PEMDAS)

Let's calculate the result for the last step.