Does anybody know the answer and how to get it please? I want the steps on how to get it also please.

Add the fractions and simplify 1/2+ 1/3

If f(x) = 4 - x2 and g(x) = 6x, which expression is equivalent to (g-f)(3)? 06-3-(4 + 3)2 06-3-(4-33 6(3) - 4 +32 6(3) -4 -32

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64