SOLUTION: 3 5 6=151872 5 5 6=253094 5 6 7=303585 5 5 3=251573 9 4 7=?

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Question 918115: 3 5 6=151872
5 5 6=253094
5 6 7=303585
5 5 3=251573
9 4 7=?
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
3%2B5%2B6=151872 ...here we have 15|18|72
=> %283%2A5%29=15%283%2A6%29=18 and find out how to get 72

if we use%28a%2Ab%29%2B%28a%2Ac%29-c we got

%283%2A5%29=15and%283%2A6%29=18, then
15%2B18-6=27.. =>now interchange the digit place (reverse) and you will get 72; so, we have 15|18|72

so, formula is:

check this one:
5%2B6%2B7=303585
5%2B6%2B7+=+%285%2A6%29%285%2A7%29%28%285%2A6%29%2B%285%2A7%29-7%29
5%2B6%2B7+=+%2830%29%2835%29%28%2830%29%2B%2835%29-7%29
5%2B6%2B7+=+%2830%29%2835%29%2865-7%29
5%2B6%2B7+=+%2830%29%2835%29highlight%28%2858%29%29%3C-reverse%29
5%2B6%2B7+=+%2830%29%2835%29%2885%29

then
9%2B4%2B7= ??
a%2Bb%2Bc+=+%28a%2Ab%29%28a%2Ac%29%28%28a%2Ab%29%2B%28a%2Ac%29-c%29
9%2B4%2B7+=+%289%2A4%29%289%2A7%29%28%289%2A4%29%2B%289%2A7%29-7%29
9%2B4%2B7+=+%2836%29%2863%29%28%2836%29%2B%2863%29-7%29
9%2B4%2B7+=+%2836%29%2863%29%2899-7%29
9%2B4%2B7+=+%2836%29%2863%29highlight%28%2892%29%29%3C-reverse%29
9%2B4%2B7+=+%2836%29%2863%29%2829%29
answer is: 9%2B4%2B7=366329