To simplify an expression using distributive property, you need to multiply the number on the outside of the parenthesis and multiply them by the numbers inside the parenthesis. 9 x 2n = 18n and 9 x 1 = 9.
So basically it's just a simple division equation (kind of): 600/3000 We can simplify this so the denominator is 100 20/100 So she saved 20% of her money in the month of January.<span />