姐姐今年15岁，姐姐比我大5岁。9M(_8N+r0y3a+_1]'y9|/w*`
（1）我今年几岁？9M(_8N+r0y3a+_1]'y9|/w*`
算式：提示*y,K'z6r;X-H8P'T4Q9M(_8N+r0y3a+_1]'y9|/w*`
答：我今年:s4D)b+M岁。9M(_8N+r0y3a+_1]'y9|/w*`
（2）三年之后，姐姐几岁？我几岁？9M(_8N+r0y3a+_1]'y9|/w*`
算式：提示1S:E-~*h9M(_8N+r0y3a+_1]'y9|/w*`
算式：提示5]6X7J.B;O.@.O-U0p7}9M(_8N+r0y3a+_1]'y9|/w*`
答：三年之后，姐姐.l;R2O;{:N+\岁，我3c0c/C(D4Q岁。9M(_8N+r0y3a+_1]'y9|/w*`