Please solve this asap: 3/4 - 12/7 / 12/21 +4/5

Answer 1

3/4 - 12/7 / 12/21 + 4/5

3/4 - (12/7)(21/12) + 4/5

3/4 - 3 + 4/5

15/20 --3 + 16/20

21/20 - 3

21/20 - 60/20

49/20

Answer 2

Please see video.