-3.14*35.2+6.28*(-23.3)-1.57*36.4

=-(3.14*35.2+6.28*23.3+1.57*36.4)

=-[3.14*35.2+3.14*2*23.3+(3.14/2)*36.4]

=-3.14*(35.2+46.6+18.2)

=-3.14*100

=-314

也可以提1.57为公因子,一样的. -3.14*35.2+6.28*(-23.3)-1.57*36.4

=-(3.14*35.2+6.28*23.3+1.57*36.4)

=-[3.14*35.2+3.14*2*23.3+(3.14/2)*36.4]

=-3.14*(35.2+46.6+18.2)

=-3.14*100

=-314

也可以提1.57为公因子,一样的. -3.14*35.2+6.28*(-23.3)-1.57*36.4

=-3.14*35.2+3.14*2*(-23.3)-1.57*2*18.2

=-3.14*35.2+3.14*(-46.6)-3.14*18.2

=-3.14*(35.2+46.6+18.2)

=-3.14*100

=-314 -3.14*(35.2+2*23.3+0.5*36.4)=-3.14*100=-314 -3.14*35.2+6.28*(-23.3)-1.57*36.4

=-1.57*35.2*2+1.57*(-23.3*4)-1.57*36.4

=1.57*(-35.2*2-23.3*4-36.4)

=-1.57*(70.4+93.2+36.4)

=-1.57*200

=-314