tolong kakak yak heheh, ini soal kelas 6 sd

1. 14/6 × ( 5/8 + 1 1/3 ) ÷ 2 1/4
= 14/6 × ( 5/8 + 4/3 ) ÷ 2 1/4
= 14/6 × ( 5/2 + 1/3 ) ÷ 2 1/4
= 14/6 × ( 15/6 + 2/6 ) ÷ 2 1/4
= 14/6 × 30/36 ÷ 9/4
=7/5 × 5/18 ÷ 9/4
=35/90 ÷ 9/4
= 35/90 × 4/9
=140/810
=14/81

2. 5/6 + 1 4/7 × 5/21 - 1/6
=5/6 + 11/7 × 5/21 - 1/6
=35/42 + 66/42 × 5/21 - 1/6
= 101/42 × 5/21 - 1/6
=505/882 - 1/6
=505/882 - 147/882
=358/882
=179/441

3. 3 2/5 × 1/4
= 17/5 × 1/4
= 17/20

4. 1 2/4 ÷ 2/5 ÷ 3 1/8
= 8/4 ÷ 2/5 ÷ 25/8
= 8/4 × 2/5 × 25/8
= 1/2 × 1/5 × 25.
= 1/2 × 1 × 5
= 5/2

5. 3 2/5 + 1/4 - 2/10
= 17/5 + 1/4 - 2/10
=68/20 + 5/20 - 4/20
=69/20