简算47/9-4.7+146/9-5.3
问题描述:
简算47/9-4.7+146/9-5.3
算不开可以写分数
答
47/9-4.7+146/9-5.3
=(47/9+146/9)-(4.7+5.3)
=193/9-10
=193/9-90/9
=103/9