SOLUTION: The sum of the digits of a two-digits number 7. Tve ten's digit is one more than twice the units digit.

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Question 1077364: The sum of the digits of a two-digits number 7. Tve ten's digit is one more than twice the units digit.
Found 2 solutions by math_helper, Shin123:
Answer by math_helper(2461) About Me  (Show Source):
You can put this solution on YOUR website!
Let:
a=ten's digit
b=one's digit
a+b = 7 (1)
a = 2b+1 (2)
Substitute for 'a' from (2), into (1): (2b+1)+b = 7
3b+1 = 7
3b = 6
b = 2 —> a = 2(2) + 1 = 5
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Ans: The number is 52
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Answer by Shin123(626) About Me  (Show Source):
You can put this solution on YOUR website!
a=tens
b=ones
system%28a%2Bb=7%2Ca=2b%2B1%29 Substitute 2b+1 for a,
%282b%2B1%29%2Bb=7
2b%2B1%2Bb=7
3b%2B1=7
3b=6
highlight%28b=2%29 2*2=4+1=5 highlight%28a=5%29
highlight%28Number%3A52%29