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Mekhanik [1.2K]
3 years ago
9

The sum of a number times 7 and 19 is at least 21

Mathematics
1 answer:
bonufazy [111]3 years ago
7 0
So 7x+19 has to be greater then or equal to 21
Subtract 19 from both sides to get 7x >_ 2
so × has to be greater than or equal to 2/7
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