SOLUTION: the sum of the digit is 12. the number is 1 more than 8 times its unit digit. find the number?

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Question 628018: the sum of the digit is 12. the number is 1 more than 8 times its unit digit. find the number?
Answer by dfrazzetto(277) About Me  (Show Source):
You can put this solution on YOUR website!
for a number, xy
x + y = 12
"xy" = 1 + 8y
try different combinations
93, no
84, no
75, no
66, no
57, yes because 8(7) = 56 + 1 = 57