SOLUTION: The sum of the two digits of a number is 10. If the tens’ digit is 1 more than twice the units’ digit, what is the number ?

Algebra ->  Customizable Word Problem Solvers  -> Numbers -> SOLUTION: The sum of the two digits of a number is 10. If the tens’ digit is 1 more than twice the units’ digit, what is the number ?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 547140: The sum of the two digits of a number is 10. If the tens’ digit is 1 more than twice the units’ digit, what is the number ?
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
(ab) is the number
given:
a%2Bb=10
a=highlight%281%2B2b%29
.
highlight%281%2B2b%29%2Bb=10 substitution
1%2B3b=10 add like terms and subtract 1
3b=9divide by 3
b=3
a=7
highlight%2873%29