Question

1)1/2 + 4/7 - 3/4 2)1/7 + 2/3 - 1/23)2/9 + 3/4 - 3/54)1/2 + 1/4 + 1/85)7/30 - 2/15 + 1/66)5/12 + 5/6 - 3/47)4/9 - 3/10 + 1/28)5/8 + 1/10 - 7/25С решением pls,Срочно нужно​

Answer 1

1)1/2 + 4/7 - 3/4 =
= 14/28 + 4/28 - 21/28 = - 3/28

2)1/7 + 2/3 - 1/2 =
= 6/42 + 28/42 - 21/42 = 13/42

3)2/9 + 3/4 - 3/5 =
= 40/180 + 135/180 - 108/108 = 67/180

4)1/2 + 1/4 + 1/8 =
= 4/8 + 2/8 + 1/8 = 8/7

5)7/30 - 2/15 + 1/6 =
= 14/60 - 8/60 + 10/60 =
= 16/60 = 4/15

6)5/12 + 5/6 - 3/4 =
= 25/60 + 50/60 - 45/60 =
= 30/60 = 1/2

7)4/9 - 3/10 + 1/2 =
= 40/90 - 27/90 + 45/90 =
= 58/90 = 29/45

8)5/8 + 1/10 - 7/25 =
= 125/200 + 20/200 - 56/200 = 89/200

Answer 2

Ответ:

Пошаговое объяснение:

1)1/2+4/7-3/4=9/28

2)1/7+2/3-1/2=13/42

3)2/9+3/4-3/5=67/180

4)1/2+1/4+1/8=7/8

5)7/30-2/15+1/6=4/15

6)5/12+5/6-3/4=1/2

7)4/9-3/10+1/2=29/45

8)5/8+1/10-7/25=89/200.

Надеюсь помогла.

Answer 3

1) 1/2 + 4/7 - 3/4 + 2)

To solve the expression 1/2 + 4/7 - 3/4 + 2, we need to find a common denominator for the fractions and then perform the addition and subtraction.

The common denominator for 1/2, 4/7, and 3/4 is 28.

Converting the fractions to have a denominator of 28:

1/2 = 14/28 4/7 = 16/28 3/4 = 21/28

Now we can perform the addition and subtraction:

14/28 + 16/28 - 21/28 + 2 = 11/28 + 2 = 11/28 + 56/28 = 67/28

Therefore, the solution to 1/2 + 4/7 - 3/4 + 2 is 67/28.

2) 1/7 + 2/3 - 1/23

To solve the expression 1/7 + 2/3 - 1/23, we need to find a common denominator for the fractions and then perform the addition and subtraction.

The common denominator for 1/7, 2/3, and 1/23 is 161.

Converting the fractions to have a denominator of 161:

1/7 = 23/161 2/3 = 107/161 1/23 = 7/161

Now we can perform the addition and subtraction:

23/161 + 107/161 - 7/161 = 123/161

Therefore, the solution to 1/7 + 2/3 - 1/23 is 123/161.

3) 2/9 + 3/4 - 3/54

To solve the expression 2/9 + 3/4 - 3/54, we need to find a common denominator for the fractions and then perform the addition and subtraction.

The common denominator for 2/9, 3/4, and 3/54 is 216.

Converting the fractions to have a denominator of 216:

2/9 = 48/216 3/4 = 162/216 3/54 = 9/216

Now we can perform the addition and subtraction:

48/216 + 162/216 - 9/216 = 201/216

Therefore, the solution to 2/9 + 3/4 - 3/54 is 201/216.

4) 1/2 + 1/4 + 1/8