小鹿高X米,比长颈鹿矮3.65米,长颈鹿的高度是小鹿的3.5倍。请问小鹿高多少米?长颈鹿高多少米?
答:3.5X-X=3.65
2.5X=3.65
X=3.65除2.5
X= 9.125
9.125+3.5=12.625