一般的二元一次方程组都能直接用代入(消元)法或者加减(消元)法解出来,但是除了这些一般的二元一次方程组之外,还有一些考查答题者阅读理解和观察能力的特殊二元一次方程组,特别是近几年的中考题中,频繁出现此类题型,总结了此类题型的通用解题方法。 Ordinary binary linear equations can be solved directly by the substitution (elimination) method or the addition and subtraction (elimination) method. However, in addition to these general binary linear equations, there are some reading comprehension and Observation of ability of a special system of binary equations, especially in recent years, senior high school entrance examination questions, such questions frequently occur, summarizes the common problem-solving methods for such questions.