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Can someone please explain me why it was switched from - to +
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2 votes
Can someone please explain me why it was switched from - to +

Can someone please explain me why it was switched from - to +-example-1
User Louis Kottmann
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1 Answer

1 vote
that's because the denominator is negative and when you simplify it then the denominator gets cancelled and becomes -1 therefore the sign moves to the numerator and it becomes negative
User Rrcal
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