Answer:
-73,-74 and -75
Explanation:
1st No=x
2nd No=x+1
3rd No=x+2
x+(x+1)+(x+2)=-216
x+x+x+2+1=-216
3x+3=-216
3x=-216-3
3x=-219 (รท b.s by 3)
x=-73
1st No=-73
2nd No=-73+1
3rd No=-73+2
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