Tolong dibantu ya kakak​

1.
3 1/6 + 1/4
= 19/6 + 1/4
= 38/12 + 3/12
= 41/12
= 3 5/12

2.
9/6 + 2 2/3
= 9/6 + 8/3
= 9/6 + 16/6
= 25/6
= 4 1/6

3.
1/10 + 2 8/20
= 1/10 + 48/20
= 2/20 + 48/20
= 50/20
= 2 10/20
= 2 1/2

4.
11 2/7 + 6/5
= 79/7 + 6/5
= 395/35 + 42/35
= 437/35
= 12 17/35

5.
12 3/8 + 25/24
= 99/8 + 25/24
= 297/24
= 12 9/24
= 12 3/8

6.
15 2/5 + 6/25
= 77/5 + 6/25
= 385/25 + 6/25
= 391/25
= 15 16/25

Semoga membantu