let the numbers be = x, x+1,x+2,x+3
on adding all these numbers we get -2
x+(x+1)+(x+2)+(x+3) = -2
4x + 6 = -2
4x = -2-6
4x = -8
x = -8/4
x = -2
x+1 = -2+1 = -1
x+2 = -2+2 = 0
x+3 = -2+3 = 1
therefore -2 is the smallest in the 4 consecutive numbers
hope it helps...!!!