题目内容
14.若$\left\{\begin{array}{l}x+2y=2015\\ 2x+y=4024\end{array}\right.$,则x+y=2013.分析 方程组两方程相加求出x+y的值即可.
解答 解:$\left\{\begin{array}{l}{x+2y=2015①}\\{2x+y=4024②}\end{array}\right.$,
①+②得:3(x+y)=6039,
解得:x+y=2013,
故答案为:2013.
点评 此题考查了解二元一次方程组,熟练掌握运算法则是解本题的关键.
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