16只兔子可换3只羊,9只羊可换2头牛,10头牛可换多少只兔子?'G+l7U3P6X7P,g4Q5\-l.|
算式:提示-W*t(_)}7@5C0U:s0M;i'G+l7U3P6X7P,g4Q5\-l.|
答:10头牛可换;d2M,w0M'w;u只兔子。'G+l7U3P6X7P,g4Q5\-l.|