Question 409570
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Hi
twice the first number is one more than the second.
Let x and (2x -1)represent the first and  second number respectively
Question states***
 x + (2x -1)= -64
Solving for x
    3x = -63
     x = -21, the first number.  The second number is -43  (-42-1)
CHECKING our Answer***
 -21 + (-43) = -64