今年爸爸，妈妈、哥哥、弟弟、的年龄分36岁、34岁、8岁、6岁，多少年后，爸爸、妈妈的年龄之和是哥

Question

今年爸爸，妈妈、哥哥、弟弟、的年龄分36岁、34岁、8岁、6岁，多少年后，爸爸、妈妈的年龄之和是哥哥、弟弟年龄之和的3倍？（怎么做？方程，采纳）

Answer 1

解：设x年后爸爸妈妈的年龄之和是哥哥弟弟之和的3倍，则，

(36+x)+(34+x)=3x[(8+x)+(6+x)]
2x+70=6x+42
4x=28
x=7
答7年以后。望楼主采纳追问

Thank you！very much！I come from America，my name is Julia ,my sister call Sophia.The above is my teacher just in that society Chinese,they are right?Because I can't do this question,so I ask,did not think of you help me out,thanks again.In order to repay you,I'm going to adopt.

追答

You are welcome，Julia，so, please accept my answer。