Question

2,75:(1,5-0,4)+(0,75+5/6): 3 1/6​

Answer 1

Ответ:

Пошаговое объяснение:

2,75 :(1,5-0,4)+(0,75+5/6): 3 1/6=3

1) 1,5-0,4=1,1

2) 2,75:1,1=2,5

3) 0,75+5/6=75/100+5/6=3/4+5/6=((3*3)+(5*2))/12=(9+10)/12=19/12

4) 19/12 : 3 1/6=19/12 : 19/6=19/12 * 6/19=1/2=0,5

5)2,5+0,5=3

Answer 2

To solve the expression, we need to follow the order of operations (PEMDAS/BODMAS). PEMDAS stands for Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right). BODMAS is a similar acronym used in some countries, and it stands for Brackets, Orders (Exponents), Division and Multiplication (from left to right), and Addition and Subtraction (from left to right).

Let's break down the expression step by step:

1. Calculate the expression within parentheses: (1,5 - 0,4) = 1.5 - 0.4 = 1.1

2. Calculate the expression within parentheses in the second part of the expression: (0,75 + 5/6) = 0.75 + 0.8333... ≈ 1.5833...

3. Now, the expression becomes: 2.75 ÷ 1.1 + 1.5833... ÷ 3 1/6

4. Perform division first: 2.75 ÷ 1.1 ≈ 2.5 1.5833... ÷ 3 1/6 ≈ 1.5833... ÷ (3 + 1/6) ≈ 1.5833... ÷ (19/6) ≈ 1.5833... × (6/19) ≈ 0.4973...

5. The expression now becomes: 2.5 + 0.4973...

6. Finally, add the two results: 2.5 + 0.4973... ≈ 2.9973...

So, the final result of the expression is approximately 2.9973...