SOLUTION: twenty is twice the sum of a number and four. find the number.

Algebra ->  Equations -> SOLUTION: twenty is twice the sum of a number and four. find the number.      Log On


   

Question 748970: twenty is twice the sum of a number and four. find the number.
Answer by timvanswearingen(106) About Me  (Show Source):
You can put this solution on YOUR website!
Let x represent the number you are looking for. Then the sum of the number and 4 is (x+4) and twice that sum is 2(x+4), which is equal to 20:
20=2%28x%2B4%29
Distribute:
20=2x%2B8
Subtract 8 from both sides:
12=2x
Divide both sides by 2:
6=x