Is 3 over 4 x b the same as 3xb qver 4?

Answer 1

It is difficult to answer the question because it is still ambiguous. Putting brackets in helps. So:

(3 over 4) x b = 3/4*b = 3*b / 4 YES

but 3 over (4 x b) = 3/(4*b) is not 3/4*b