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一、概念的对比含有未知数的等式叫方程,而“只含有一个未知数,且含未知数的式子是整式,未知数的次数是1”的方程叫一元一次方程.
First, the concept of the comparison contains an unknown equation called the equation, and “there is only one unknown, and the equation containing the unknown is an integer, the number of unknowns is 1” equation is called a one-dimensional equation.