8 5/7 + 8/21 tolong bantu aku make cara pecahan campuran pliss

8 5/7 + 8/21
= ((8*7)+5)/7 + 8/21
= 61/7 + 8/21
=(61*3)/(7*3) + 8/21
=183/21 + 8/21
=191/21
=9 2/21