-64*[-2(-1/4+1/6)+81/(-27/8)
问题描述:
-64*[-2(-1/4+1/6)+81/(-27/8)
答
-64*[-2(-1/4+1/6)+81/(-27/8)]=-64*[(1/2-1/3)-24]=-64*1/6+64*24=-32/3+1536=1525+1/3 -64*[-2(-1/4+1/6)+81/(-27/8)]=128(-1/4+1/6)+64*81/(-27/8)=128*(-1/12)+64*24=-32/3+1536=1525+1/3