纵观近几年的高考试题,以多变元形式出现的题型屡见不鲜,这类题型由于变元个数多,条件较为复杂,面对众多变元之间的制约关系考生往往不知从何下手,导致得分率很低。下面介绍三种求解多变元问题的常用策略。一、消元策略在众多的变元中,运用代入法、加减法,消 Looking at the high exam questions in recent years, the types of questions that appear in the form of multiple variables are not uncommon. Due to the large number of arguments and complex conditions, candidates often do not know where to face the constraints of many variables. Starting, leading to a very low scoring rate. Here are three common strategies for solving multivariate problems. First, elimination strategy in many variables, using substitution method, addition and subtraction, elimination