Question

Выполните действия: А) 5/6-3/4; Б)1/3+1/5 В)3/10+1/2 Г)1/3-1/7 Спасибо

Answer 1

5:6-3:4=5
             6

1:3+1:5=8
             15

3:10+1:2=0.8

1:3-1:7=4
            21

Понятно?

Answer 2

A) 5/6 - 3/4

To subtract fractions, we need to have a common denominator. In this case, the common denominator is 12.

Converting 5/6 and 3/4 to have a denominator of 12:

5/6 = 10/12 3/4 = 9/12

Now we can subtract the fractions:

10/12 - 9/12 = 1/12

Therefore, 5/6 - 3/4 = 1/12.

B) 1/3 + 1/5

To add fractions, we need to have a common denominator. In this case, the common denominator is 15.

Converting 1/3 and 1/5 to have a denominator of 15:

1/3 = 5/15 1/5 = 3/15

Now we can add the fractions:

5/15 + 3/15 = 8/15

Therefore, 1/3 + 1/5 = 8/15.

C) 3/10 + 1/2

To add fractions, we need to have a common denominator. In this case, the common denominator is 10.

Converting 3/10 and 1/2 to have a denominator of 10:

3/10 = 3/10 1/2 = 5/10

Now we can add the fractions:

3/10 + 5/10 = 8/10

Simplifying the fraction:

8/10 = 4/5

Therefore, 3/10 + 1/2 = 4/5.

Г) 1/3 - 1/7

To subtract fractions, we need to have a common denominator. In this case, the common denominator is 21.

Converting 1/3 and 1/7 to have a denominator of 21:

1/3 = 7/21 1/7 = 3/21

Now we can subtract the fractions:

7/21 - 3/21 = 4/21

Therefore, 1/3 - 1/7 = 4/21.

I hope this helps! Let me know if you have any other questions.