一根绳子剪去一半,再减去余下的一半又2米,还剩下4米,这根绳子原来长多少米?0I4B0j4K4O(X(K-p7c;o7o+c(n*a
算式:提示4B2@+w2I5e;e0I4B0j4K4O(X(K-p7c;o7o+c(n*a
答:这根绳子原来长:w'}4J.v3o7z米。0I4B0j4K4O(X(K-p7c;o7o+c(n*a