📚 Solving Linear Equations Step by Step | 逐步解线性方程
Linear equations are fundamental in mathematics, forming the backbone of algebra and problem-solving. Mastering how to solve them builds confidence for more advanced topics. In this guide, we will thoroughly explore linear equations using the balancing method, covering one-step, two-step, equations with brackets, variables on both sides, and real-world applications. Follow along and practise to sharpen your skills.
线性方程是数学的基础，构成了代数和问题解决的支柱。掌握如何解它们会为更高级的主题建立信心。在本指南中，我们将使用平衡法全面探索线性方程，涵盖一步方程、两步方程、带括号的方程、两边都有变量的方程以及实际应用。跟随并练习以增强你的技能。
1. What is a Linear Equation? | 什么是线性方程？
A linear equation is an equation where the variable (often x) appears to the power of 1. There are no terms like x² or x³. The standard form is usually ax + b = c, where a, b and c are numbers (constants) and a ≠ 0. For example, 4x − 7 = 5 is a linear equation. Solving it means finding the value of x that makes the equality true.
线性方程是变量（通常是 x）的指数为 1 的方程。没有像 x² 或 x³ 这样的项。标准形式通常是 ax + b = c，其中 a、b 和 c 是数字（常数）且 a ≠ 0。例如，4x − 7 = 5 是一个线性方程。解它意味着找到使等式成立的 x 值。
2. The Balancing Method | 平衡
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