What is the highest common factor of 12 and 32? It is 4, so we divide both numbers by 4. This gives us 3 : 8. This cannot be simplified further, therefore it is the simplest form.
I am not positive for the factoring of each expression but for the distributive property you do 8 TIMES x then 8 times 7 so you would get blank plus blank and so on for the next ones.