将代数式5/2 x^y+x^y-5xy^/2合并同类项5/2 x^y+（x^y-5xy^）/2

将代数式5/2 x^y+x^y-5xy^/2合并同类项5/2 x^y+（x^y-5xy^）/2
将代数式5/2 x^y+x^y-5xy^/2合并同类项
5/2 x^y+（x^y-5xy^）/2

将代数式5/2 x^y+x^y-5xy^/2合并同类项5/2 x^y+（x^y-5xy^）/2
5/2 x^y+x^y-5xy^/2
=(5/2+1)x^y-5xy^/2
=7x^y/2-5xy^/2

5/2 x^y+x^y-5xy^/2
=7/2 x^y+-5xy^/2

5/2 x^y+x^y-5xy^/2
=（5/2+1-5/2)x^y
=x^y