Will give brainliest to whoever answers correctly.

Pls! does anybody know a shortcut for answering these types of questions in the future?

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

[15 points, algebra 2]simplify the complex fraction and find the restrictions.