13-(8/9÷16/3-16/3)等于几

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13-(8/9÷16/3-16/3)等于几
13-(8/9÷16/3-16/3)等于几

13-(8/9÷16/3-16/3)等于几
13-(8/9÷16/3-16/3)
=13-(8/9×3/16-16/3)
=13-(1/6-16/3)
=13-(1/6-32/6)
=13+31/6
=18又1/6