83/5+3,75:(31/2-15/8)=

83/5 + 3,75 : (31/2 - 15/8)
83/5 + 375/100 : ( 124/8 - 15/8)
83/5 + 375/100 : 109/8
16.600/1000 + 3.750/1000 : 13.625/1000
16.600/1000 +( −9875/1000)
6.725/1000
pecahan campuran= 6 725/1000