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同类量之间,有相等关系,也有不等关系,方程就是含有未知数的等式.学习了方程后,必然要学习不等式,才能对数量间关系有一个全面理解. 由方程到不等式,是生产和生活的需要.实际中同类量不等
There are equal and unequal relations between similar quantities. Equations are equations containing unknowns. After learning the equations, we must learn inequalities in order to have a comprehensive understanding of the relationship between numbers. From equations to inequalities, it is the production and The need of life. The actual amount of the same kind