计算①﹣4²×5/8-﹙﹣5﹚÷2³×﹙﹣4﹚³ ②18+32÷﹙﹣2﹚³-﹙﹣4﹚²×5 ③﹙﹣3﹚²-1/5×5/9+﹙﹣2﹚³×3

问题描述:

计算①﹣4²×5/8-﹙﹣5﹚÷2³×﹙﹣4﹚³ ②18+32÷﹙﹣2﹚³-﹙﹣4﹚²×5 ③﹙﹣3﹚²-1/5×5/9+﹙﹣2﹚³×3

①﹣4²×5/8-﹙﹣5﹚÷2³×﹙﹣4﹚³ =-10-40=-50

②18+32÷﹙﹣2﹚³-﹙﹣4﹚²×5 =18-4-80=-66

③﹙﹣3﹚²-1/5×5/9+﹙﹣2﹚³×3=9-1/9-24=-118/3

①﹣4²×5/8-﹙-5﹚÷2³×﹙﹣4﹚³
=-16×5/8+5÷8×(-64)
=-10-40
=-50
②18+32÷﹙-2﹚³-﹙-4﹚²×5
=18+32÷(-8)-16×5
=18-4-80
=-66
③﹙﹣3﹚²-1/5×5/9+﹙﹣2﹚³×3
=9-1/9+(-8)×3
=8又8/9-24
=-15又1/9