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The numbers are x, x+1 and x+2.
The equation is
(x+2) + 2x = 4*(x+1).
Simplify and find x
x + 2 + 2x = 4x + 4
3x = 4x + 2
-x = 2.
x = -2.
The numbers are -2, -1, 0.
CNECK. a) 0 + 2*(-2) = -4. b) 4*(-1) = -4.
So, a) = b). ! Correct !
But "0" is not negative, so the condition is not precisely correct.
Answered.