hasil dari 1,25-3/4+15%

1,25 - 3/4 + 15 %
=> 125/100-3/4+15/100
=> 5/4 - 3/4 + 3/20
=> 8/4 +3/20
=> 40/20 + 3/20
=> 43 /20
=> 2 3/20

1,25-3/4=1,25-0,75=0,50
0,50-15%=0,50+0,15=0,65