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aivan3 [116]
3 years ago
11

Kate sold one half of her paintings and purchased 7 more. If Kate has 21 paintings now, how many paintings did she have to begin

with?
Mathematics
1 answer:
Anna11 [10]3 years ago
6 0
(work backwards)
21-7=14 (before purchasing)
14x2=28 (before selling)

Ans: 28
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To find the solutions of the quadratic equation given in the problem, you can apply the proccedure shown below:

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