12.b)
First 16 divided by 2 = 8 You get the 2 from the 2/5. So now you know each numerator (top number) is worth ''8'' So since the numerator is 1, you do 1 x 8 which is 8. So now do 8/x =1/5 Now flip the fraction that has a variable (8/x) and multiply. Top = x × 1 = x. Bottom = 8×5 = 40. Now it's, x/40. We aren't done but we're going to go to, 3/5. 8×3 = 24.
So 2/5 = 16; 1/5 = 8; 3/5 = 24
