How to find three consecutive integers whose sum is -15.

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x       (1st consecutive integer)x + 1 (2nd consecutive integer)x + 2 (3rd consecutive integer) x + (x + 1) + (x + 2) = -153x + 3 = -153x = -15 - 3 = -18x = -18/3 x       = -6 (1st consecutive integer)x + 1 = -5 (2nd consecutive integer)x + 2 = -4 (3rd consecutive integer)