Answer:
8/(8+x)
Step-by-step explanation:
f(g(x)) using f(x)=x/(x+1) and g(x)=8/x
g(x)/(g(x)+1) write out f(x) but replace every x with g(x) to give you f(g(x))
(8/x)/((8/x)+1) replace every g(x) with 8/x
(8/x)/(8/x+x/x) look at the denominator: find a least common multiple by multiplying by x/x
(8/x)/((8+x)/x) add the fractions in the denominator
8/x*x/(8+x) copy dot flip - cancel the x's
8/(8+x)
