According to chapter 4 maths class 7, A simple equation is a mathematical statement that shows that two expressions are equal. It has an equal sign (=) between the two sides. To solve a simple equation, aim to isolate the variable (usually represented by a letter) on one side of the equation. Perform the same operations on both sides of the equation to keep it balanced. This maintains the equality of the expressions. The goal is to find the value of the variable that satisfies the equation. This value will make both sides of the equation equal. Also Practice chapter 4 maths class 7 solutions to command the concepts.