thank you very much!已知关于X,Y的方程组X+2Y=2A+1,X-2Y=4A-3的解是一对正数,求)A的取值范围(2)化简|3A-1|+|A-2|

thank you very much Thank you very much. Thank you very much Thank you very much, thank you very much Thank you very much! thank you very much 英语翻译thank you very much 英语翻译thank you very much~ Thank you very much!翻译 急用,Thank You very much. Thank you very much回答 英语翻译Thank you very much Thank you very much W 英语翻译Thank you very much. 英语翻译Thank you very much! 英语翻译Thank you very much! 英语翻译Thank you very much!