SOLUTION: I think of a number,increase it by 4 and double the answer .The result is 20 more than the number. Find this number

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Question 663759: I think of a number,increase it by 4 and double the answer .The result is 20 more than the number. Find this number
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

think of a number x,increase it by 4
x%2B4
and double the answer
%28x%2B4%292
the result is 20 more than the number x

%28x%2B4%292=x%2B20..solve for x
2x%2B8=x%2B20
2x-x=20-8
highlight%28x=12%29