Addition puzzle/question

[Brenden]

Is there a formula for figuring this puzzle? There are over 300 possible answers. xxx+yyy=zzz You have to use all the numbers 1-9 once.

 

[goby2004]

but you could only use three numbers, each variable represents one number. so like xxx could equal 1x1x1

to use all 9 numbers the equation would have to be abc+def=ghi or something like that.

 

[Brenden]

No it is standard 3 digit addition.... like 294+651=945 but you have to use each number 1-9 once. In the example I used 9,5 and 4 twice and did not use 3,7,8
"abc+def=ghi" is a good example

 

[krisfal]

Do not know any formula but here is one solution:

583 + 146 = 729