Ответ:
39/7×28/13-7/5 /1/2+2/15=3×3-7/5×2+2/15=9-14/5+2/15=135-42+2\5=19
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Ответ:
39/7×28/13-7/5 /1/2+2/15=3×3-7/5×2+2/15=9-14/5+2/15=135-42+2\5=19