SOLUTION: i add 7 to a certain number .i double the result my final answer is 34 what was my number

Algebra ->  Customizable Word Problem Solvers  -> Numbers -> SOLUTION: i add 7 to a certain number .i double the result my final answer is 34 what was my number      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 914283: i add 7 to a certain number .i double the result my final answer is 34 what was my number
Found 2 solutions by fave, MathTherapy:
Answer by fave(7) About Me  (Show Source):
You can put this solution on YOUR website!
let a be the certain number and let b be the result from the addition
That is 7+a=b
2b=34
b=17
7+a=17
a=17-7=10
your number is 10

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

i add 7 to a certain number .i double the result my final answer is 34 what was my number


Let number be N

Then: 2(N + 7) = 34

Solve for N