 Welcome to the session. Let us discuss the following question. The question says, find the value of A and B for which the falling system of linear equations has infinite number of solutions, 2x minus 3y equals to 7, A plus B x minus A plus B minus 3y equals to 4a plus B. Before solving this question, we should know that system of linear equations A1x plus B1y plus C1 equals to 0 and A2x plus B2y plus C2 equals to 0 has infinite number of solutions 2 is equal to B1y B2 is equal to C1y C2. Keeping this in mind, let us now begin with the solution. Now here in this question, we have to find value of A and B for which the falling system of linear equations has infinite number of solutions. Now for infinite number of solutions, we know that 2 is equal to B1y B2 is equal to C1y C2. Now here A1 is 2 and B2 is minus of A plus B minus 3.