-8²+(-8)²+5×(-6﹚=﹣30
-24×﹙-1/2+3/4-1/3)=2
﹛39[23/24]﹜×﹙﹣12﹚﹜=﹣﹙24×39+23﹚/2=﹣479.5
1+﹙﹣1﹚×﹙1/3-1/2﹚÷1/2﹣2=﹣2/3