1/5 + 2/3 How do I do this problem step by step?

If you could answer these your a life saver

Leslie started last week with $1200 in her checking account. during the week, she wrote the checks below.

21 type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. the solution set of n2 - 14n = -45 is { (separate the solutions with a comma)