SOLUTION: Three times the mystery number was increased by 100, and the result was 12 less than the number. What is the mystery number?

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Question 40133: Three times the mystery number was increased by 100, and the result was 12 less than the number. What is the mystery number?
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
3X+100=X-12 OR 2X=-112 OR X=-56 PROOF
3*-56+100=-56-12 OR -168+100=-68 OR -68=-68