Explain why 4/10 : 2 and 4/10 * 1/2 both equal 2/10

They are both equal to 2/10 because 4/10 divided by 2 is the same as 4/10 x 1/2

When you are multiplying something by 1/2, you only multiply the number by 1, then proceed to divide it by the remaining 2. It is equal because : 2 and * 1/2 produce the same results