5.4×3.8-6.5×5.4+2.7×5.4= 递等式计算简便

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5.4×3.8-6.5×5.4+2.7×5.4=递等式计算简便5.4×3.8-6.5×5.4+2.7×5.4=递等式计算简便5.4×3.8-6.5×5.4+2.7×5.4=递等式计算简便5.4×3.8

5.4×3.8-6.5×5.4+2.7×5.4= 递等式计算简便
5.4×3.8-6.5×5.4+2.7×5.4= 递等式计算简便

5.4×3.8-6.5×5.4+2.7×5.4= 递等式计算简便
5.4×3.8-6.5×5.4+2.7×5.4
=5.4×(3.8-6.5+2.7)
=5.4×0
=0