m + n = 2285
(m - 5) / 7 = n, или m =7n + 5, тогда
8n + 5 = 2285
n = 285
m = 2285 - 285 = 2000
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m + n = 2285
(m - 5) / 7 = n, или m =7n + 5, тогда
8n + 5 = 2285
n = 285
m = 2285 - 285 = 2000