mickey has a total of 36 unmatched socks that are either red, black, or brown. there are 11 unmatched red socks and four times a
s many unmatched black socks as brown ones.. how many unmatched black socks does mickey have?
2 answers:
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We have , so that
, so
, and any solution of the form
satisfies the congruence, where
is any integer.