SOLUTION: Please help me I'm not good with word problems I just need help setting it up and I can take it from there. Four times a number is 21 more than the number. What is the number?

Question 834421: Please help me I'm not good with word problems I just need help setting it up and I can take it from there.
Four times a number is 21 more than the number. What is the number?

Answer by jgr45(31) (Show Source): You can put this solution on YOUR website!
This is a basic translation of words into an algebraic expression and is an essential fundamental skill to learn.
Four times a number is 4x (or any letter you'd like to use; x is the most common). "Is" means equals; 21 more than a number is x+21.
So your equation is 4x = x + 21.
3x = 21
x = 7
4(7) =? 7 + 21
28 = 28
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