75×3×25×3=(75+25)×3 ___
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Worked solution
1. 分析等式右边的算式并运用乘法分配律展开
根据乘法分配律,等式右边的算式可以展开为:
2. 对比等式左右两边并做出判断
等式左边为 (表示两积相乘),而等式右边展开后为 (表示两积之和)。
显然,
因此,原等式 是错误的。
Answer
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