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Sum of three consecutive numbers= -24 (i)

Also, sum of three consecutive numbers = x+(x+1)+(x+2) (ii)

(i) = (ii)

x+x+1+x+2 = -24

3x+3 = -24

3x = -24-3

3x = -27

x = -27/3

x = -9

So, x= -9, x+1=-8, x+2 = -7