tatsach

1)=-0.5*(-2.125)*(-0.8)+9.35=-0.85+9.35=8.5

2)=-5.4*3.125*(-0.4)-32=6.75-32=-25.25

3)=1.28*(-2.25)*3.5-45.92=-10.08-45.92=-56

4)=-6.75*(-10)*(-1.3)+100=-87.75+100=12.25