1) 156-96:(12:4):2= 156-96:3:2=156-32:2=156-16=140
2) 156-96:12:(4:2)= 156-96:12:2=156-8:2=156-4=152
3) (156-96:12):(4:2)=(156-8):2=148:2=74
4) 4689*5+97308=23445+97308=120753
5) 90000-6*2509= 90000-15054=74946
6) 76090*4-5673=304360-5673=298687
7) 1485:5*4=297*4=1188
8) 2496:8*7=312*7=2184
9) 9999:9*8=1111*8=8888