Question

8,5•2,8-18:(3,2/7+1,5/7)

Answer 1

Ответ:

8,5•2,8-18:(3,2/7+1,5/7)=9,6

Пошаговое объяснение:

3,2/7=0,4

1,5/7=0,2

0,4+0,2=0,6

8,5•2,8=23,8

23,8-18=5,8

5,8/0,6=9,6

Answer 2

To solve this expression, you should follow the order of operations (PEMDAS/BODMAS: Parentheses/Brackets, Exponents/Orders, Multiplication and Division, Addition and Subtraction).

Let's break it down step by step:

1. First, inside the parentheses, simplify the fractions: (3.2/7 + 1.5/7) = (4.7/7) = 0.6714 (rounded to four decimal places)

2. Now, the expression becomes: 8.5 * 2.8 - 18 / 0.6714

3. Next, perform the multiplication and division from left to right: 8.5 * 2.8 = 23.8 18 / 0.6714 ≈ 26.8127 (rounded to four decimal places)

4. Finally, subtract the results: 23.8 - 26.8127 ≈ -3.0127 (rounded to four decimal places)

So, the result of the expression is approximately -3.0127.