Kim has 12 nail polishes. Heidi has 5 more nail polishes than Kim, and Karen has 4 fewer nail polishes than Kim. How many nail polishes does Karen and Heidi have together?
Heidi has 12+5 = <<12+5=17>>17 nail polishes.
Karen has 12-4 = <<12-4=8>>8 nail polishes.
Heidi and Karen have 17+8 = <<17+8=25>>25 nail polishes together.
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