Question

(2 1/4+3 2/3)÷(8 1/2-1 2/5)×1,2

Answer 1

1
так как это все!!
ну я могу написать все действия но это займет пол часа а в уме пару минут

Answer 2

(2 1/4+3 2/3) ÷ (8 1/2-1 2/5)*1,2=1
1)2 1/4 + 3 2/3=          2)8 1/2 - 1 2/5=                     3)5 11/12 : 7 1/10=
2 3/12 + 3 8/12=            8 5/10 - 1 4/10=                     71/12 : 71/10=
5 11/12                            7 1/10                                     71/12 * 10/71=
                                                                                           1/12 * 10/1 =
                                                                                             10/12
4)10/12*1,2=10/12*1 2/10=10/12 * 12/10= 1 

Answer 3

To solve this expression, we need to follow the order of operations, which is Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right).

Let's start by simplifying the expression inside the parentheses first:

2 1/4 + 3 2/3 = 9/4 + 11/3

To add these fractions, we need to find a common denominator:

9/4 = 27/12

11/3 = 44/12

Now we can add:

27/12 + 44/12 = 71/12

Next, let's simplify the expression inside the second set of parentheses:

8 1/2 - 1 2/5 = 17/2 - 7/5

To subtract these fractions, we need to find a common denominator:

17/2 = 42.5/5

7/5 = 1.4

Now we can subtract:

42.5/5 - 1.4 = 41.1/5

So the expression becomes:

(71/12) ÷ (41.1/5) × 1.2

To divide fractions, we invert the second fraction and multiply:

(71/12) × (5/41.1) × 1.2

To multiply fractions, we simply multiply the numerators and denominators:

(71 × 5 × 12 × 6) / (12 × 41.1)

Simplifying:

(21300 / 246.6)

Multiplying by 1.2:

25560 / 246.6

Simplifying:

103.6555...

Rounding to two decimal places:

103.66

So the final answer is 103.66.