8,757-(7,8-1,043)=8,757-7,8+1,043=0,957+1,043=2
3,96+(2,375-3,96)=3,96+2,375-3,96=2,375
3/8+(1/8-3/4)=3/8+1/8-3/4=4/8-3/4=1/2-3/4=2/4-3/4=-1/4
8,757-(7,8-1,043)=8,757-7,8+1,043=0,957+1,043=2
3,96+(2,375-3,96)=3,96+2,375-3,96=2,375
3/8+(1/8-3/4)=3/8+1/8-3/4=4/8-3/4=1/2-3/4=2/4-3/4=-1/4