 Hello and welcome to the session. In this session we discussed the calling question which says simplify 3x-6y-5x-3y-x plus 3y bar. Let's see its solution now. The given expression is 3x-6y-5x-3y-x plus 3y bar. Now to simplify this first we will solve the innermost bracket or we will remove the innermost bracket. This is equal to 3x-6y-5x-3y-. Now since we have a bar with x plus 3y so we will keep the term x plus 3y in one bracket. Now we will remove this bracket first and since we have a minus sign preceding this bracket so the signs of the terms inside this bracket will be changed. So this is equal to 3x-6y-5x-3y-6-3y and further we have 3x-6y-5x- of minus x. Now since we have a minus sign preceding this bracket so the sign of the term inside this bracket would be changed and so this would give us 3x-6y-5x-6y-6x. Now we have a minus sign preceding this bracket so the sign of the term inside this bracket would be changed and so this would be equal to 3x-6y-6x. Now lastly we will remove this bracket and since we have a minus sign preceding this bracket so the signs of the terms inside this bracket would be changed and so this is equal to 3x-6y-6x which further is equal to 9x-6y. Now taking three common here we get inside the bracket 3x-2y so our final answer is 3x-2y. This completes the session. Hope you have understood the solution of this question.