Exercise 3.2 Q1( all parts) Q2 class 10 maths linear equations in two variables #substitutionmethod

Substitution Method for Solving Equations The substitution method is a technique used to solve systems of linear equations. Here's a step-by-step guide: 1. *Solve one equation for one variable*: Choose one equation and solve it for one variable (e.g., solve for x in terms of y). 2. *Substitute into the other equation*: Substitute the expression from step 1 into the other equation. 3. *Solve for the other variable*: Solve the resulting equation for the other variable. 4. *Find the value of the first variable*: Substitute the value from step 3 back into one of the original equations to find the value of the first variable. Example: Equations: x + 2y = 4 3x - y = 5 1. Solve the first equation for x: x = 4 - 2y 2. Substitute into the second equation: 3(4 - 2y) - y = 5 12 - 6y - y = 5 -7y = -7 y = 1 3. Find x: x = 4 - 2(1) x = 2 Solution: x = 2, y = 1 #maths #utdmathematics #neerajsir #class10 #exam #education #introduction #cbse