Question

1)2 7/11+3 4/11-4= 2)2 5/11-1 7/11=3)1 7/15-2 2/5+1 8/15=4)1-31/40Help пж НЕ ДУМАЙТЕ ЩО ЦЕ ВСЕ ОДИН ПРИКЛАД ЗАЙДІТЬ НА ЦЕ ПИТАННЯ

Answer 1

Ответ:

1.   2 7 /11+3 4/11-4=6-4=2

2.  2 5/11-1 7/11=1 16/11- 1 7/11= 9/11

3.   1 7/15- 2 2/5+1 8/15= 22/15- 42/15=-20/15+1 8/15=3/15=1/5

4.   1-31/40=40/40-31/40=9/40

Пошаговое объяснение:

Answer 2

1. To solve the expression 2 7/11 + 3 4/11 - 4, we need to convert the mixed numbers into improper fractions.

2 7/11 can be written as (2 * 11 + 7)/11 = 25/11 3 4/11 can be written as (3 * 11 + 4)/11 = 37/11

Now we can substitute these values back into the expression:

25/11 + 37/11 - 4

To add the fractions, we need to have a common denominator, which in this case is 11.

(25 + 37)/11 - 4

62/11 - 4

To subtract 4 from a fraction, we also need a common denominator:

(62 - 4 * 11)/11

(62 - 44)/11

18/11

So the simplified result is 18/11.

2. To solve the expression 2 5/11 - 1 7/11, we'll follow the same steps as above.

2 5/11 can be written as (2 * 11 + 5)/11 = 27/11 1 7/11 can be written as (1 * 11 + 7)/11 = 18/11

Now we can substitute these values back into the expression:

27/11 - 18/11

To subtract fractions with the same denominator, we subtract the numerators:

(27 - 18)/11

9/11

So the simplified result is 9/11.

3. To solve the expression 1 7/15 - 2 2/5 + 1 8/15, we'll follow the same steps as above.

1 7/15 can be written as (1 * 15 + 7)/15 = 22/15 2 2/5 can be written as (2 * 5 + 2)/5 = 12/5 1 8/15 can be written as (1 * 15 + 8)/15 = 23/15

Now we can substitute these values back into the expression:

22/15 - 12/5 + 23/15

To add or subtract fractions with the same denominator, we add or subtract the numerators:

(22 - 12 + 23)/15

33/15

To simplify the fraction, we can divide the numerator and denominator by their greatest common divisor, which in this case is 3:

(33/3)/(15/3)

11/5

So the simplified result is 11/5.

4. To solve the expression 1 - 31/40, we'll follow the same steps as above.

1 can be written as 1/1

Now we can substitute these values back into the expression:

1/1 - 31/40

To subtract fractions with different denominators, we need to find a common denominator, which in this case is 40:

(40 * 1 - 31)/40

(40 - 31)/40

9/40

So the simplified result is 9/40.