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-3-(-5)+(1-0.2÷五分之三)÷(-2)
=-3+5+(1-1/3)x(-1/2)
=2+2/3x(-1/2)
=2-1/3
=5/3
=-3+5+(1-1/3)x(-1/2)
=2+2/3x(-1/2)
=2-1/3
=5/3
更多追问追答
追问
一件三分之一神马意思
追答
1-0.2÷五分之三=1-(1/5)x(5/3)=1-1/3
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