79×8/5+7.21×160% 35-15%X=15 23-8/9÷5/6×15/16 2/5X-120×40%=12 急,算式要清楚的

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/10 09:31:00
79×8/5+7.21×160% 35-15%X=15 23-8/9÷5/6×15/16 2/5X-120×40%=12 急,算式要清楚的

79×8/5+7.21×160% 35-15%X=15 23-8/9÷5/6×15/16 2/5X-120×40%=12 急,算式要清楚的
79×8/5+7.21×160% 35-15%X=15 23-8/9÷5/6×15/16 2/5X-120×40%=12 急,
算式要清楚的

79×8/5+7.21×160% 35-15%X=15 23-8/9÷5/6×15/16 2/5X-120×40%=12 急,算式要清楚的
79×8/5+7.21×160%
=(79+7.21)×1.6
=86.21×1.6
=137.936;
35-15%X=15;
0.15x=20;
x=2000/15;
x=400/3;
23-8/9÷5/6×15/16
=23-(8/9)×(6/5)×(15/16)
=23-2
=21;
2/5X-120×40%=12
2x/5=12+48;
2x/5=60;
x=150;