Answer:

Step-by-step explanation:
Factorise the denominator of the second fraction
y² - 1 = (y - 1)(y + 1) ← difference of squares
To obtain a common denominator
multiply numerator/ denominator of first fraction by (y + 1)
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← subtract numerators leaving the common denominator
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= 
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← cancel common factor (y - 1) on numerator/denominator
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Answer:
Commutative
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Answer:
The answer to this question is A
Step-by-step explanation:
Answer:
3/5+2 does not equal 2/3
Step-by-step explanation:
Hope this helps!