Question: collect x/2+y/2 with 1/2

I want to collect a two terms expression x/2+y/2.

But, I cannot do it as follows.

> x/2+y/2;

> normal(%);

>factor(%)

result was 1/2*x+1/2*y.

With which can I have maple modify the above expression to (x+y)/2.

 

Thank you in advance.

taro

 

 

 

 

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