[4-(0.5+2)]×0.75請教我過程.

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[4-(0.5+2)]×0.75請教我過程.[4-(0.5+2)]×0.75請教我過程.[4-(0.5+2)]×0.75請教我過程.[4-(0.5+2)]×0.75先算小括号:=[4-2.5]×0.7

[4-(0.5+2)]×0.75請教我過程.
[4-(0.5+2)]×0.75
請教我過程.

[4-(0.5+2)]×0.75請教我過程.
[4-(0.5+2)]×0.75 先算小括号:=[4-2.5]×0.75 接着算中括号=1.5×0.75 然后乘出结果=1.125