Posted by packy on .
the units digit of a 2digit 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,
x y
y = 2x+1
y = 10x
so
10x = 2x+1
3 x = 9
etc 
algebra 
packy,
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,
Check it by using 37 in the problem statement.
the units digit (7) of a 2digit 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,
thank u