Tolong jawab dong plis lima soal doang plis yg baik plis deh tolong yaaa pliss ​

Jawab:

11. 2/15 + 2/6 = 4/30 + 10/30

= 14/30

12. 3/8 + 5/7 = 21/56 + 40/56

= 61/56

13. 2/3 + 5/18 = 12/18 + 5/18

= 17/18

14. 7/9 + 4/5 = 35/45 + 36/45

= 71/45

15. 6/12 + 11/20 = 30/60 + 33/60

= 63/60