17.68+0.5*0.3-18/1.5 怎样简便

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17.68+0.5*0.3-18/1.5怎样简便17.68+0.5*0.3-18/1.5怎样简便17.68+0.5*0.3-18/1.5怎样简便17.68+0.5×0.3-18÷1.5=17.68+0

17.68+0.5*0.3-18/1.5 怎样简便
17.68+0.5*0.3-18/1.5 怎样简便

17.68+0.5*0.3-18/1.5 怎样简便
17.68+0.5×0.3-18÷1.5
=17.68+0.15-18×2/3
=17.83-12
=5.83

17.68+0.5*0.3-18/1.5
=17.68+0.15-18/(3/2)
=17.83-18*(2/3)
=17.83-12
=5.83