13/27*8+19/27*13=?各位大哥大姐们,求你们啦!告诉我答案吧!急急急急急!~~~~呜呜呜今天就要!啊啊啊呜呜呜~~~~~~~~~~~烧三炷香~~~~~~~~~~

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13/27*8+19/27*13=?各位大哥大姐们,求你们啦!告诉我答案吧!急急急急急!~~~~呜呜呜
今天就要!啊啊啊呜呜呜~~~~~~~~~~~烧三炷香~~~~~~~~~~

=13/27*8+13/27*19
=13/27*(8+19)
=13/27*27
=8

13