So because 1 and 4 are right because they both describe the quotient being of h and 30. 5 is right because fractions are really just the numerators divided by denominators (h÷30).
Please keep in mind that there is a specific order in division, multiplication, and subtraction. The order does NOT matter when it is addition. The reason it was wrong was because the order was incorrect. If you look at the fraction you'll see that the unknown number was in the numerator and the 30 was in the denominator. For the answers you must follow this order to get it correctly. If you look at the other answer ( i don't wish to offend in any way.) the person put 1 in there answer and it was out of order. By that I mean it put 30 first instead of the unknown number.
