SOLUTION: If you pay $22.90 for a DVD that includes a 7% sales tax, what is the price of the DVD before the sales tax?

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Question 708295: If you pay $22.90 for a DVD that includes a 7% sales tax, what is the price of the DVD before the sales tax?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +x+ = price before sales tax
given:
+x+%2B+.07x+=+22.9+
+1.07x+=+22.9+
+x+=+22.9%2F1.07+
+x+=+21.402+
The price of the DVD before the sales tax
was $21.40