First, I thought how can solve this problem.

This problem gave expression which l had to solved, and explained problem details.

Especially, expression of problem is might to me. It was included problem.

I just did put the present number for expression.

If it is not related for expression, l can’t find the answer.

I don’t have any roadback. If I’m wrong, l solve again, again or see the problem and think.

I learn how can solve problem with expression.

No. it’s usually problems. I think this problem just use expression.

My feel is not bad. I just think it is problem, and l will solve this.

This problem remind before we have to learn.

I like to practice more problems because it is more easy to solve problem.