Posted by **packy** on Wednesday, January 6, 2010 at 6:43pm.

the units digit of a 2-digit number exceeds twice the tens digit by 1. find the number if the sum of its digits is 10.

Please help i am completley lost!!

- algebra -
**Damon**, Wednesday, January 6, 2010 at 6:49pm
x y

y = 2x+1

y = 10-x

so

10-x = 2x+1

3 x = 9

etc

- algebra -
**packy**, Wednesday, January 6, 2010 at 6:53pm
im still pretty confused, but i think u r suppossed to solve the 2 equations u gave and got (3,7) but i think im way off

- algebra -
**Damon**, Wednesday, January 6, 2010 at 7:23pm
Check it by using 37 in the problem statement.

the units digit (7) of a 2-digit number (37)exceeds twice the tens (2*3=6) digit by 1.(6+1=7 sure enough)) find the number if the sum of its digits is 10. (3+7=10 sure enough)

- algebra -
**Zoey**, Wednesday, January 6, 2010 at 7:29pm
thank u

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