For the answer to the question above, <span> 5x3 (the hundreds digit)= 15 so 3+x+y=15. 15-3=12. x+y=12. No even number + odd number can be = 12, so both digits must be odd. That leaves us with 3+3+z=15, 3+3+x =15 and 3+5+y= 15. 3+1+9 (highest odd digit)= 13 so that is wrong. 3+3+9= 15, but there is a double digit, so wrong again. 3+5+7=15. 357 is the answer.</span>