SOLUTION: What does "x" represent? 7x+3=21

SOLUTION: What does "x" represent? 7x+3=21

Algebra.Com

Question 334624: What does "x" represent?
7x+3=21
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
7x+3=21
7x=18
x=2.57
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