解答
解答
求解步骤
Translate the problem into an equation:
求解
流行的例子
6 years ago, the age of Jem was thrice the age of Min. The sum of their present ages is 36. Find the age of Jem, 7 years from nowKim’s father is now 2 1/2 as old a kim. ten years ago he was 4 times as old as kimI am 24 years old. I am 3 years older than Ana.At present, a man is four times as old as his son. Six years ago, he was thirteen times as old ashis son. How old was the man when his son was born?Tim is now 12 years old. After how many years will his age be greater than twice his present age?