SOLUTION: write the missing digit to make each number divisible by 9 7 blank 1 waht do i do

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Question 717347: write the missing digit to make each number divisible by 9
7 blank 1
waht do i do
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
It is well known that if the digits of a number add to a multiple of 9 then so does the number. We look for a 1-digit number such that
7+blank+1 adds to a multiple of 9
Since our number is 1-digit we need to use 1
711/9=79

:)