Question

. Запишите десятичные дроби в виде обыкновенных. Выполните действия: 6 1) 6- -1, 75): 9 - 2, 2.5 3,5 8 11 2. 5 2 2) 3. - 1 6 15 5 + 9 1 +0, 24 - 8 20 Помогите пжж

Answer 1

Ответ:

Пошаговое объяснение:

(6 1\8 -1,75)\(9-2,2*(5 6\11-3,5))*1 2\7=1 1/4

1)6 1/8-1,75=6 1/8-1 75/100=6 1/8-1 3/4=49/8-7/4=35/8

2)5 6/11-3 5/10=5 6/11-3 1/2=61/11-7/2=(122-77)/22=45/22

3)45/22*2 1/5=45/22*11/5=9/2=4 1/2

4)9-4 1/2=4 1/2

5)35/8:9/2=35/8*2/9=35/36

6)35/36*1 2/7=35/36*9/7=5/4=1 1/4

(3 5\6-1 2\15)*5\9+((1\20+0,24)*8 1\3-1 1\6)*2=4

1)3 5/6-1 2/15=23/6-17/15=(115-34)/30=81/30=2 7/10

2)2 7/10*5/9=27/10*5/9=3/2=1 1/2

3)1/20+0,24=1/20+24/100=5/100+24/100=29/100

4)29/100*8 1/3=29/100*25/3=29/12

5)29/12-1 1/6=29/12-7/6=15/12=1 1/4

6)5/4*2=10/4=2 1/2

7)1 1/2+2 1/2=4

Answer 2

Converting Decimal Fractions to Ordinary Fractions

To convert decimal fractions to ordinary fractions, we'll perform the following calculations:

1) 6 - 1.75 ÷ 9 - 2.2 ÷ 3.5 2) 3 - 1 ÷ 6 - 15 ÷ 5 + 9 - 10 ÷ 24 - 8 ÷ 20

Let's solve each of these step by step.

Calculation 1

1) 6 - 1.75 ÷ 9 - 2.2 ÷ 3.5

First, let's convert the decimal numbers to fractions: - 1.75 = 7/4 - 2.2 = 11/5 - 3.5 = 7/2

Now, the expression becomes: 6 - 7/4 ÷ 9 - 11/5 ÷ 7/2

To simplify this, we can convert the division into multiplication by taking the reciprocal of the second fraction: 6 - 7/4 * 9 - 11/5 * 2/7

Now, we can perform the multiplication and subtraction to get the result.

Calculation 2

2) 3 - 1 ÷ 6 - 15 ÷ 5 + 9 - 10 ÷ 24 - 8 ÷ 20

First, let's convert the decimal numbers to fractions: - 1 = 1/1 - 15 = 15/1 - 10 = 10/1 - 24 = 24/1 - 8 = 8/1 - 20 = 20/1

Now, the expression becomes: 3 - 1/1 ÷ 6 - 15/1 ÷ 5 + 9 - 10/1 ÷ 24 - 8/1 ÷ 20

We can simplify this expression by performing the division and addition/subtraction in the correct order to get the result.

Let's proceed with solving these calculations.