几道计算题,最好有详细的列式!

题目

几道计算题,最好有详细的列式!
1.-1-(1+0.5)*1/3/(-4)=
2.(-49/1/9)/1/6=
3.

答案

1.-1-(1+0.5)*1/3/(-4)
=-1+（3/2)*(1/3)/4
=-1+(1/2)/4
=-1+1/8
=-7/8
2.(-49/1/9)/1/6
=(-49*9)*6
=-441*6
=-2646