 Hi and welcome to the session. My name is Shashi and I am going to help you with the following question. Question is solve the following pair of linear equations by the substitution method. Equations are x plus y is equal to 14 and x minus y is equal to 4. Let us start with the solution now. We will rewrite the equations given in the question and let us name them as equation number 1 and equation number 2. Now from equation 2 we get x is equal to 4 plus y. Now we will substitute this value of x in the equation 1. Now substituting the value of equation in 1 we get the equation 4 plus y plus y is equal to 14 which implies 4 plus 2y is equal to 14 or we can say 2y is equal to 14 minus 4 which implies 2y is equal to 10 or y is equal to 10 upon 2 which is equal to 5. Now let us name this equation as 3. The equation where we had found out the value of the x equal to 4 plus y we name it as 3 and now substitute the value of y equal to 5 in the equation 3. Now we get x is equal to 4 plus 5 which implies x is equal to 9. So our required solution is x is equal to 9 and y is equal to 5. We can verify our answer by substituting the values of x and y in the equations given in the question. If both the equations are satisfied then our answer is correct. This completes the session. Hope you understood the session. Take care and goodbye.