Question

1-3/5=? 4 2/15-2/5=? 2 7/18- 1/10=? 5 3/14+1 3/10=? 1 1/19+1 15/19=? 2 1/10+4=? 1 2/7-2/7=?

Answer 1

Ответ:

1-3/5=5/5-3/5=2/5

4 2/15-2/5=3 17/15-6/15=3 11/15

2 7/18-1/10=2 70/180-18/180=2 52/180=2 13/60

5 3/14+1 3/10=5 30/140+1 42/140=6 72/140=6 18/35

11/19+1 15/19=1 26/19=2 7/19

2 1/10+4=(2+4)+1/10=6 1/10

1 2/7-2/7=1

Answer 2

Let's calculate each of these expressions:

1. 1 - 3/5 = 2/5

2. 4 2/15 - 2/5 = 4 2/15 - 6/15 = 4 2/15 - 6/15 = 3 13/15

3. 7/18 - 1/10 = (35/90) - (9/90) = 26/90 = 13/45

4. 3/14 + 1 3/10 = 3/14 + 13/10 (convert 1 3/10 to an improper fraction) = (45/70) + (91/70) = 136/70 = 68/35 = 1 33/35

5. 1/19 + 1 15/19 = 1/19 + 19/19 = (1 + 19) / 19 = 20/19

6. 1 1/10 + 4 = 1 + 1 4/10 = 1 + 14/10 = 1 + 7/5 = (5/5) + 7/5 = 12/5 = 2 2/5

7. 2/7 - 2/7 = 0

So, here are the answers to your expressions:

1. 2/5
2. 3 13/15
3. 13/45
4. 1 33/35
5. 20/19
6. 2 2/5
7. 0