This session based on coincident lines will help you to solve its problem by understanding & applying it logically.
To know more about pair of linear equations,
Click on these links,
Variables Reducible Method - Problem Solving
Variables Reducible Method | Linear Equation
Cross Multiplication Method - Problem Solving | Linear Equation
Cross Multiplication Method | Linear Equation
Substitution Method - Problem Solving | Linear Equation
Substitution Method | Linear Equation