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In 1/a-b - 1/b-a Why do we multiply the fraction by -1 to get the common denominator? I factorised the denominators and got the wrong answer. The answer is 2/a-b Please explain, thank you
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In 1/a-b - 1/b-a

Why do we multiply the fraction by -1 to get the common denominator?
I factorised the denominators and got the wrong answer.
The answer is 2/a-b
Please explain, thank you

User John Kealy
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3.9k points

1 Answer

5 votes
Idk but better then I have the same thing to call me and my friend told him I don’t want him to
User Esaevian
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