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yKpoI14uk [10]
4 years ago
13

42 = 4n -7(n-9) solve it

Mathematics
2 answers:
Murljashka [212]4 years ago
4 0
42=4n-7n+63
42=-3n+63
-21=-3n
N=7
Artemon [7]4 years ago
3 0
I hope this helps you



42=4n-7n-7. (-9)

42=-3n+63

-3n=-21

n=7
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