1,X(原式)=(8-5)*(-3-6)=3*(-9)=-27
2 X=(-123/4)÷(-15)=123/60=41/20
3,X=0.33*3*9=8.91
4,X=9*4*11/12=33
5,X=81*9/4*4/9*1/16=81/16(5.0625)
6,X=(120-7-37)*(35/9)=2660/9(295又5/9)
1,X(原式)=(8-5)*(-3-6)=3*(-9)=-27
2 X=(-123/4)÷(-15)=123/60=41/20
3,X=0.33*3*9=8.91
4,X=9*4*11/12=33
5,X=81*9/4*4/9*1/16=81/16(5.0625)
6,X=(120-7-37)*(35/9)=2660/9(295又5/9)