OMG im so stressed today i cant think strait so... 1/2+1/3=?

so i get that what i dont get is how the answer is 5/6?
bc idk what goes into both 2 and 3 besides 2 and 1

Apolynomial function has a root of –6 with multiplicity 1, a root of –2 with multiplicity 3, a root of 0 with multiplicity 2, and a root of 4 with multiplicity 3. if the function has a positive leading coefficient and is of odd degree, which statement about the graph is true?

What is the remainder when 2872 is divided by 76? a) 51 b) 57 c) 60 d) 63

With number 11 ( show how you got the answer)