Question

If x = a^3/b and a•b is not equal to 0, then 1/a^3=
A) bx
B) b/x
C) x/b
D) 1/bx

Answer 1

replace a^3 with c

x=c/b
solve for c

times b both sides
xb=c

ok
1/c=1/(xb)

D is answer