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意思解释：（Equation）数学用语，也叫方程式，指含有未知数的等式。
表示两个数学式(如两个数、函数、量、运算)之间相等的一种式子，通常在两者之间有一等号(=) 今指方程式，即含有未知数的等式。使等式成立的未知数的值称为方程的“解”或“根”。求方程的解的过程称为“解方程”。
A formula that represents the equality between two mathematical expressions (such as two numbers, functions, quantities and operations). Usually, an equal sign (=) between them refers to an equation, that is, an equation with unknown numbers. The value of the unknown number that makes the equation hold is called the "solution" or "root" of the equation. The process of solving the equation is called "solving the equation".
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