(-5/6)×83+(-5/6)×(-13)-(-5/6)×28简便算法
问题描述:
(-5/6)×83+(-5/6)×(-13)-(-5/6)×28简便算法
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答
加法分配率算简单
(-5/6)×83+(-5/6)×(-13)-(-5/6)×28
=(-5/6)x(83-13-28)
=(-5/6)x42
=(-5)x7
=-35