 Hi and welcome to the session. Let us ask the following question. It says there are equations in solve them to find the unknown numbers in the following cases. G-heart is, under things of a number, if we take away 7 from 5 by 2 of the number, the result is 11 by 2. Let us now begin with the solution. Let the unknown number be a, which under things of question takes away 7 from 5 by 2 of this unknown number that is 5 by 2 a. And I am taking away 7 from 5 by 2 a, which takes 11 by 12. So our required equation is 5 by 2 a minus 7 equals to 11 by 2. This equation, so we will first transpose to write inside. Thus we take 5 by 2 a equals to 11 by 2 plus 7. This implies 5 by 2 a is equal to 11 plus 14 divided by 2. We have taken an algorithm of 2 and 1. This implies 5 by 2 a is equal to 25 by 2. Now we will multiply both sides of this equation by 2. So we have 2 into 5 by 2 a equals to 2 into 25 by 2. This implies 5 a is equal to 25. Now we will divide both sides of this equation by 5. So we have 5 a divided by 5 equals to 25 by 5. This implies n is equal to 5. So our required equation is 5 by 2 a minus 7 equals to 11 by 2 and value of n is 5. This is our answer to this part. So this is a piece of equation. Bye and take care.