简答题:设三元非齐次线性方程组Ax=b的系数矩阵A的秩为2，且它的三个解向量<img src="http://www.weimei168.com/uploads/202208/161258445767391.png" width="70" height="30" />满 <br /> 足<img src="http://www.weimei168.com/uploads/202208/161258446439791.png" width="20" height="29" />+<img src="http://www.weimei168.com/uploads/202208/161258446910241.png" width="24" height="29" />=(3，1，-1)<img src="http://www.weimei168.com/uploads/202208/161258447629681.png" width="14" height="25" />，<img src="http://www.weimei168.com/uploads/202208/161258448475571.png" width="20" height="29" />+<img src="http://www.weimei168.com/uploads/202208/161258448955021.png" width="22" height="30" />=(2，0，-2)<img src="http://www.weimei168.com/uploads/202208/161258449785851.png" width="14" height="25" />，求Ax=b的通解．