1) -16-(25-73)
25-73=-48
-16-(-48)=-16+48=32
2) 3/4-5/6•3/5
-5/6*3/5=-15/30=-1/2
3/4-1/2=3-2/4=1/4
3) 2,6+39:1,3
39:1,3=20
2,6+30=32,6