SOLUTION: a two-digit number is twice the sum of its digits. if the tens digit is 7 less than the unit digit. find the number
Algebra.Com
Question 273605: a two-digit number is twice the sum of its digits. if the tens digit is 7 less than the unit digit. find the number
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Call the units digit
and the tens digit
given:
---------------
Substitute
The number is 18
check:
OK
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