This is an easy algebra problem. I believe clever jgh must can solve it in 1min!

We know that and

  1. What is the value of ?

  2. What is the value of ?

My hape solution is below the picture

My hape solution below!

This is my hape solution:


Then we devide the upper thing by because if then the second upper thing must equal.

Finally we got



Then plug those two upper things into and got

I think mk must have a better solution!! If you have, please send another blog to let me see clearly! Thank you!