(-18.25)- 22/5+(+73/4)+(-4.4)

3个回答

  • (1) (-18.25)- 22/5+(+73/4)+(-4.4)

    原式= (-18.25)+(- 22/5)+(+73/4)+(-4.4)

    =(-18.5)+(-4.4)+(+18.5)+(-4.4)

    = [(-18.5)+18.5 ] + [ (-4.4)+(-4.4)]

    =0+(-8.8)

    =-8.8

    (2) -1.5-(-13/3)+17/6-(-33/4)

    原式=-3/2+13/3+17/6+33/4

    =(-18/12)+52/12+34/12+99/12

    =13又11/20