龟鹤共用100个头,350只脚,龟,鹤各多少只?0R:~+U4w6w
解:
算式:提示9k7y,~3C1C:O.V0]*|-B0R:~+U4w6w
答:龟有*q6s5S.t;~5T(B,D,l,T,E/s只,鹤有-i;N,?9L1T2S.U3g只。0R:~+U4w6w