一根绳长14分之9米,截下9分之2,还剩几米?

问题描述:

一根绳长14分之9米,截下9分之2,还剩几米?

还剩下 9/14×(1-2/9) = 9/14× 7/9 = 1/2 =0.5(米)
答:还剩下 0.5米截下9分之2米呢?9/14 - 2/9 = 81/126 - 28/126 = 53/126还剩下 126分之53米