SOLUTION: the sum of three consecutive multiples of 7 is 777.find these multiples

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Question 701837: the sum of three consecutive multiples of 7 is 777.find these multiples
Answer by mouk(232) About Me  (Show Source):
You can put this solution on YOUR website!
If the multiple is n then the three consecutive numbers would be:
+7n+, 7n%2B7 and +7n%2B14+

And so:
+%287n%29+%2B+%287n%2B7%29+%2B+%287n%2B14%29+=+777+
+21n+%2B+21+=+777+
+21n+=+756+
+n+=+36+

So the three numbers are:
252, 259 and 266