La suma de dos números es 12 y la mitad de uno de ellos el
doble del otro. ¿Qué números son?

41/2 - 1 1/3 what is the answer as a fraction?

The number of branches on a tree demonstrates the fibonacci sequence. how many branches would there be on the next two levels of this tree? 13 | | | m branches

Having a hard time understanding this question (see attachment).