①(1-3/2-3/8+7/12)×(-24)= ②(-8)×9×(-1.25)×(-1/9)=
问题描述：
①(1-3/2-3/8+7/12)×(-24)= ②(-8)×9×(-1.25)×(-1/9)=
①(1-3/2-3/8+7/12)×(-24)=
②(-8)×9×(-1.25)×(-1/9)=
③(-306/11)÷9-(1/2+2/3-3/4-11/12)×(-24)=
答
1.:=-24+36+9-14
=7
2:=-1.25-8(9-1/9)
=1-1
=1
3:3:-34/11-(12/24+16/24-18/24-22/24)24
=-34/11-12-16+18+22
=-34/11+12