Question

72:(82-78)×2. 19+17×4-38. 5×(3×28-73)​

Answer 1

Ответ:

72:(82-78)×2 19+17×4-38 5×(3×28-73)

72:4×2. 19+68-38. 5×11

36. 49. 55

Answer 2

Let's calculate the values of the given expressions step by step:

1. 72:(82-78)×2 First, let's simplify the expression within the parentheses: 82 - 78 = 4 Now, we can substitute this value back into the expression: 72:(4)×2 Performing the division: 72 ÷ 4 = 18 Finally, multiplying by 2: 18 × 2 = 36

   Therefore, 72:(82-78)×2 is equal to 36.

2. 19+17×4-38 We will perform the multiplication and addition/subtraction in the correct order following the order of operations (PEMDAS/BODMAS): 17 × 4 = 68 Now, substituting this back into the expression: 19 + 68 - 38 Performing the addition and subtraction: 19 + 68 = 87 87 - 38 = 49

   Therefore, 19+17×4-38 equals 49.

3. 5×(3×28-73) Let's simplify the expression within the parentheses first: 3 × 28 = 84 Now, substitute this value back into the expression: 5 × (84 - 73) Simplifying further: 84 - 73 = 11 Substituting the value: 5 × 11 = 55

   Therefore, 5×(3×28-73) is equal to 55.

So, the results are as follows: 72:(82-78)×2 = 36 19+17×4-38 = 49 5×(3×28-73) = 55