jawablah soal berikut

1. 1/4 ÷ 2/5 - 1/6
= 1/4 × 5/2 - 1/6
= 5/8 - 1/6
= 15/24 - 4/24
= 11/24

2. 4/7 × 1/8 + 1/2
= 4/56 + 1/2
= 4/56 + 28/56
= 52/56
= 13/14

3. 3 ÷ 2/7 + 1/4
= 3/1 × 7/2 + 1/4
= 21/2 + 1/4
= 42/4 + 1/4
= 43/4
= 10 3/4

4. 1/2 × 2/5 : 2/3
= 2/10 ÷ 2/3
= 2/10 × 3/2
= 6/20
= 3/10

5. 2 3/4 ÷ 1/4 × 1/2 + 2/3
= 11/4 × 4/1 × 1/2 + 2/3
= 44/4 × 1/2 + 2/3
54= 11 × 1/2 + 2/3
= 11/2 + 2/3
= 33/6 + 4/6
= 37/6
= 6 1/6

6. 7/8 × 4 1/2 - 3/4 + 2/3
= 7/8 × 9/2 - 3/4 + 2/3
= 63/16 - 3/4 + 2/3
= 63/16 - 12/16 + 2/3
= 51/16 + 2/3
= 153/48 + 32/48
= 185/48
= 3 41/48

7. 2 1/8 + 3/4 ÷ 2 × 4 2/4
= 17/8 + 3/4 ÷ 2/1 × 18/4
= 17/8 + 3/4 × 1/2 × 18/4
= 17/8 + 3/8 × 18/4
= 17/8 + 54/24
= 51/24 + 54/24
= 106/24
= 4 5/12

8. 4 ÷ 2 1/5 - 1/7 + 1/14
= 4/1 ÷ 11/5 - 1/7 + 1/14
= 4/1 × 5/11 - 1/7 + 1/14
= 20/11 - 2/14 + 1/14
= 20/11 - 1/14
= 280/154 - 11/154
= 269/154
= 1 115/154

9. 12 3/4 - 4 1/3 ÷ 3/4
= 51/4 - 13/3 × 4/3
= 51/4 - 52/9
= 459/36 - 208/36
= 251/36
= 6 35/36

10. 4/7 ÷ 3/8 ÷ 2 1/2 + 3/4
= 4/7 × 8/3 × 2/5 + 3/4
= 32/21 × 2/5 + 3/4
= 64/105 + 3/4
= 256/420 + 315/420
= 571/420
= 1 151/420