The sum of three consecutive numbers is one hundred forty- four.
what is the smallest of three numbers

N; n + 1; n + 2 - three consecutive numbers

n + (n + 1) + (n + 2) = 144
3n + 3 = 144      |subtract 3 from both sides
3n = 141      |divide both sides by 3

n = 47 - the smallest of the three numbers

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