Question

方程组的解是　　　　　　．                                               

Answer 1

　　．                                                                                  

【考点】解二元一次方程组．                                                                  

【专题】计算题；一次方程（组）及应用．                                             

【分析】方程组利用加减消元法求出解即可．                                         

【解答】解：，                                                                

①+②得：﹣2x=4，即x=﹣2，                                                                

①﹣②得：2y=2，即y=1，                                                                      

则方程组的解为，                                                                      

故答案为：                                                                           

【点评】此题考查了解二元一次方程组，利用了消元的思想，消元的方法有：代入消元法与加减消元法．