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Mariulka [41]
3 years ago
13

The sum of digits of a cetain two - digit number is 7. Reversing its digits increases the by the number nine. what is the number

? you must use an algebraic expression to solve.
Mathematics
1 answer:
const2013 [10]3 years ago
7 0
The number is 34.
3 + 4 = 7
43 - 34 = 9
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