脱式计算:5/8÷75%- 2/19×38% (3/8+37.5%)÷(2.1-209%) 2.5×125×32

脱式计算:5/8÷75%- 2/19×38% (3/8+37.5%)÷(2.1-209%) 2.5×125×32
脱式计算:5/8÷75%- 2/19×38% (3/8+37.5%)÷(2.1-209%) 2.5×125×32

脱式计算:5/8÷75%- 2/19×38% (3/8+37.5%)÷(2.1-209%) 2.5×125×32
5/8÷75%- 2/19×38%
＝5/8×100/75-2/19×38/100
＝5/6-1/25
＝119/150
(3/8+37.5%)÷(2.1-209%)
＝(0.375+0.375）÷（2.1-2.09）
＝0.75÷0.1
＝0.75×10
＝7.5
2.5×125×32
＝2.5×32×125
＝2.5×4×4×2×5×25
＝10×10×100
＝10000

=-807 6/1

5/8÷75%- 2/19×38%
＝5/8×100/75-2/19×38/100
＝5/6-1/25
＝119/150
(3/8+37.5%)÷(2.1-209%)
＝(0.375+0.375）÷（2.1-2.09）
＝0.75÷0.1
＝0.75×10
＝7.5