SOLUTION: If you double a number and then add 12, you get one-half of the original number. What is the oringinal number? I tried this problem and my answer was 8, but i wasn't sure if it was

SOLUTION: If you double a number and then add 12, you get one-half of the original number. What is the oringinal number? I tried this problem and my answer was 8, but i wasn't sure if it was

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Question 241444: If you double a number and then add 12, you get one-half of the original number. What is the oringinal number? I tried this problem and my answer was 8, but i wasn't sure if it was correct.
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
2X+12=X/2 CROSS MULTIPLY
2(2X+12)=X
4X+24=X
4X-X=-24
3X=-24
X=-24/3
X=-8 ANS.
PROOF:
2*-8+12=-8/2
-16+12=-4
-4=-4

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