x + (x+1)+ (x+2) = -12
3x+3 =-12
Solve for x
3x =-12-3
3x=-15
Divide both sides by 3:
3x/3 = -15/3
x = -5
First integer is -5
Second is integer -5+1 =-4
Third integer -5+2 = -3
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