小马虎把15×(A+0.4)错算成5×A+0.4,他计算的结果与正确的答案相差多少?
人气：121 ℃ 时间：2020-03-23 21:12:32
解答
正确结果：15×(A+0.4)＝15A+6 他计算的结果与正确的答案相差：15A+6－5A+0.4＝10A+5.6
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