Question

Выполните действия А)2/3+1/4-5/6 б)3/5+3/10-1/2 с)7/8-5/6+5/12 д)1/3-5/24+7/18

Answer 1

Ответ:

Пошаговое объяснение:

А)2/3+1/4-5/6

2/3+1/4=11/12

11/12-5/6=1/2

Ответ: 1/12

б)3/5+3/10-1/2

3/5+3/10=9/10

9/10-1/2=2/5

Ответ:2/5

с)7/8-5/6+5/12

7/8-5/6=1/24

1/24+5/12=11/24

Ответ: 11/24

д)1/3-5/24+7/18

1/3-5/24=1/8

1/8+7/18=37/72

Ответ: 37/72

Answer 2

Calculation A: 2/3 + 1/4 - 5/6

To calculate this expression, we need to find a common denominator for the fractions involved. In this case, the common denominator is 12.

Converting the fractions to have a denominator of 12, we get:

2/3 = 8/12 1/4 = 3/12 5/6 = 10/12

Now we can add and subtract the fractions:

8/12 + 3/12 - 10/12 = (8 + 3 - 10)/12 = 1/12

Therefore, the result of the expression 2/3 + 1/4 - 5/6 is 1/12.

Calculation B: 3/5 + 3/10 - 1/2

Again, we need to find a common denominator for the fractions involved. In this case, the common denominator is 10.

Converting the fractions to have a denominator of 10, we get:

3/5 = 6/10 3/10 = 3/10 1/2 = 5/10

Now we can add and subtract the fractions:

6/10 + 3/10 - 5/10 = (6 + 3 - 5)/10 = 4/10 = 2/5

Therefore, the result of the expression 3/5 + 3/10 - 1/2 is 2/5.

Calculation C: 7/8 - 5/6 + 5/12

Once again, we need to find a common denominator for the fractions involved. In this case, the common denominator is 24.

Converting the fractions to have a denominator of 24, we get:

7/8 = 21/24 5/6 = 20/24 5/12 = 10/24

Now we can add and subtract the fractions: