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Simplify (x - y + 1) - (x + y - 1).
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Simplify (x - y + 1) - (x + y - 1).

User Rahul L
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Well first distribute the negative so the X and - X cancel, -y + -y is -2 y and 1 +1 is 2. So your final equation would be -2y+2
User NathanBrakk
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