1) (-1/2)*(-2,125)*(-4/5)+9,35 =-2,04+9,35=7,31
2) - 5 2/5*3,125*(-2/5)-32 =5,4*3,125*0,4-32=6,75-32=-25,25
3) 1,28*(-2 1/4)*3,5-45,92 =-1,28*2,25*3,5-45,92 =-10,08-45,92 =-56
4) (-63/4)*(-10)*(-1,3)+100=-15,75*13+100=-204,75+100=-104,75