the sum of three consecutive multiples of 7 is, 777. find these multiples
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Nmbers are 252, 259 and 266
Step-by-step explanation:
The numbers are consecutive multiples of 7
Let the numbers be 7x, 7(x+1) and 7(x+2)
The sum of these three = 777
7x+7(x+1)+7(x+2) = 777
7x+7x+7+7x+14 = 777
21x+21 = 777
21x = 777-21
21x = 756
x = 756/21
= 36
First number = 7x = 7x36 = 252
Second number = 7(x+1) = 7x37 = 259
Third number = 7(x+2) = 7x38 = 266
Their sum = 252+259+266
= 777
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