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Posted by **David** on Wednesday, August 11, 2010 at 5:46pm.

- Algebra -
**Henry**, Wednesday, August 11, 2010 at 6:14pmChris = X cards

Bill = 3X + 12 cards.

X + (3X +12) = (X + 42) + X

4X - 2X = 42 - 12

2X = 30

X = 15 cards

- Algebra -
**Reiny**, Wednesday, August 11, 2010 at 6:17pmChris --x

Bill --- x+42

"Bill has 12 more than three times the number of baseball cards Chyris has" ---> x+42 = 3x + 12

solve

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