Solving A Linear Equation-Lecture-5

A linear equation is any equation that can be written in the form :

$$ax+b=0$$

1. If $a=b$ then $a+c=b+c$ for any $c$. All this is saying is that we can add a number, $c$, to both sides of the equation and not change the equation.
2. If $a=b$ then $a-c=b-c$ for any $c$. As with the last property we can subtract a number, $c$, from both sides of an equation.

Linear equation