Linear Equation in One Variable
Linear Equation in One Variable Notes & NCERT SOLUTIONS Equation (in Mathematics) Definition: An equation is a mathematical statement that shows the equality of two algebraic expressions using the symbol “=”. Example: 2x + 3 = 7 Here: Left side → Left Hand Side (LHS) Right side → Right Hand Side (RHS) An equation is true only for certain values of the variable. These values are called solutions of the equation. Algebraic Expression An algebraic expression is a combination of variables, constants, and arithmetic operations (+, −, ×, ÷) without an equality sign. Examples: Expressions do not show equality, so they cannot be solved, only simplified. Variable A variable is a symbol (usually a letter like ) that represents an unknown or changeable quantity which depends on Mathematical Situations and conditions. Example: In , x+3 x is the variable. A variable can take different numerical values. Constant A constant is a...