The sum of three consecutive multiples of 7 is 777. Find these multiples.

Solution:

Let x-7, x , x+7 be the three consecutive multiples of 7.

Given that the sum of three consecutive multiples of 7 is 777. 

So we can write x-7 + x + x+7 = 777

=> 3x = 777

=> x = 777/3

=> x = 259

So x-7 = 259 – 7 = 252

x+7 = 259 + 7 = 266.

Hence the multiples are 252, 259, and 266.

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