Question

(-0,25-3/8+1/2)/(5/12-3/4-0,5)

Answer 1

вроде так все решил...

Answer 2

(-1/4-3/8+1/2)/(5/12-3/4-0.5)=(-2/8-3/8+4/8)/(5/12-9/12-6/12)=(-1/8)/(-10/12)=(-1/8)*(-12/10)=12/80=15/100=0.15