2\(3x-1)-3\(x-y)=1 4\(x-y)+3\(x+2y+=1 用加减法接二元一次方程组12点之前 要答案啊!!!!!!!!!!!!!!!!!!!!!

问题描述:

2\(3x-1)-3\(x-y)=1 4\(x-y)+3\(x+2y+=1 用加减法接二元一次方程组
12点之前 要答案啊!!!!!!!!!!!!!!!!!!!!!