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

We know that

What is the value of

? What is the value of

?

*My hape solution is below the picture*

This is my hape solution:

Similarly

Then we devide the upper thing by

Finally we got

Similarly

So

Then plug those two upper things into

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