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Lelechka [254]
4 years ago
9

Someone please help me.

Mathematics
1 answer:
SIZIF [17.4K]4 years ago
3 0

Cross multiply the fractions as in 20 times D and 13 times 60 and the problem will be 20d = 780. Here you can divide 780 by 20 and the answer is what D equals to.
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