4 positive whole numbers add up to 39. That means there are 4 factors. One is a multiple of 7. (7,14,21,28,35) The other 3 are equal. Let X equal the multiple of 7, and let Y equal the numbers that are equal. 39=x+3y Now, we have to fill in the possible multiples of 7.
39=7+3y 39-7=7-7+3y 32=3y 32/3=3y/3 10&2/3=y When we use 7, the 3 numbers are not equal whole numbers. Let's try the next multiple. 39=14+3y 39-14=14-14+3y 25/3=3y/3 5=y Yes, that is a whole positive number. It's correct.
We have to plug in the other multiples just to check, but I'll leave out the work.
39=21+3y 6=y Yes, that is a possible answer.
39=28+3y 3&2/3=y The 3 numbers are not whole numbers.
39=35+3y 1&1/3=y The 3 numbers are not whole numbers.
In conclusion, the TWO possible answers are 39=14+3(5) and 39=21+3(6). If we multiply all four numbers for the first one then it equals 1750, and the second one equals 4536. Not sure what exactly your looking for, but I answered the best I could! Hope this helped. :)