Ответ:
=-8/1×5/161+13/5×5/2=-1/1×5/2+13/1×1/2=-5/2+13/2=8/2=4
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Ответ:
=-8/1×5/161+13/5×5/2=-1/1×5/2+13/1×1/2=-5/2+13/2=8/2=4