5.4×3.8-6.5×5.4+2.7×5.4= 递等式计算简便
问题描述:
5.4×3.8-6.5×5.4+2.7×5.4= 递等式计算简便
答
5.4×3.8-6.5×5.4+2.7×5.4
=5.4×(3.8-6.5+2.7)
=5.4×0
=0