Question

4m-4n divided by 4m+4n

Answer 1

$\frac{4m-4n}{4m + 4n} = 0$

Eventually 4m and 4n will cancel out because the above portion is a negative and the below is a positive. 

Answer 2

$\dfrac{4m-4n}{4m+4n}$

Take out 4 as a common factor for both the numerator and the denominator:

$= \dfrac{4(m-n)}{4(m+n)}$

$= \dfrac{m-n}{m+n}$

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$\bf \text { Answer = } \dfrac{m-n}{m+n}$
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