Jawabanmu

2014-09-01T19:47:44+07:00
7/30 + 3/20 - 4 1/4
= 7/30 + 3/20 - 17/4  -------samain penyebutnya jadi sama-sama per-60------------
= 14/60 + 9/60 - 255/60
= -232/60
= 58/15