Exam 2021, Problem 3, Question 4

Re: Exam 2021, Problem 3, Question 4

by Seyed Mohammadhossein Tabatabaee -
Number of replies: 0
Hello,

Thank you for your question.

With a bit of work, you could prove that if a/b = c/d then a/b = c/d = (a+b)/(c +d); the second equality is obtained using this fact.

Best,
Hossein