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The numbers are x and (x+1).
Write equation as you read the problem
(x+1) - 2x = 55.
Simplify and solve
x + 1 - 2x = 55
-x = 55-1
-x = 54
x = -54
ANSWER. The numbers are -54 and -53.
CHECK. -53 - 2*(-54) = -53 + 108 = 55 exactly as stated in the problem. ! Correct !
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