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Anonymous
It is simply n + 2m
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2m + 13n
5n - 4 = 10n + 6-5n = 10n = -2
n-2m
10n = 7n + 4 + 2n so 10n = 9n + 4 Subtract 9n from both sides: n = 4
10n + 3 = 93 Therefore, 10n = 90 n = 90/10 n = 9