Human: I'm having trouble with my algebra class, can you explain the concept of linear equations? Assistant: 
Linear equations are a type of equation that can be written in the form Ax + B = C, where A, B, and C are real numbers, and A is non-zero. This equation can be used to express relationships between two or more variables, and it can be used to solve real-world problems. In linear equations, the unknowns (x) are related by the coefficients (A and B). To solve the equation, you need to find the value of x or variables that will make the equation true. To do so, you need to use methods such as substitution, elimination, or graphing to isolate the unknown or variables.