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Semmy [17]
3 years ago
14

5+1+(-3)+...+(-395)=

Mathematics
1 answer:
sleet_krkn [62]3 years ago
5 0
= \frac{(-395+5)(-395-5-4)}{2.(-4)} \\ \\ \\=-19695 \\ \\ \\ Good Luck:))
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