7/9×(3-3/7)简便方法计算
问题描述:
7/9×(3-3/7)简便方法计算
答
7/9×(3-3/7)
=7/9×3-7/9×3/7
=7/3-1/3
=2
7/9×(3-3/7)简便方法计算
7/9×(3-3/7)
=7/9×3-7/9×3/7
=7/3-1/3
=2