请教几道数学题(答出几道算几道)!第一题:(2又2/9+3又4/7+1又4/11)/(3/11+5/7+4/9)其中的/全是分数线.第二题:a、b是大于0的自然数,k是固定不变的数.定义:a*b=1/ab+1/b(k+a) 若1*1=1又1/3,求2007*2008的
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![请教几道数学题(答出几道算几道)!第一题:(2又2/9+3又4/7+1又4/11)/(3/11+5/7+4/9)其中的/全是分数线.第二题:a、b是大于0的自然数,k是固定不变的数.定义:a*b=1/ab+1/b(k+a) 若1*1=1又1/3,求2007*2008的](/uploads/image/z/1809515-11-5.jpg?t=%E8%AF%B7%E6%95%99%E5%87%A0%E9%81%93%E6%95%B0%E5%AD%A6%E9%A2%98%EF%BC%88%E7%AD%94%E5%87%BA%E5%87%A0%E9%81%93%E7%AE%97%E5%87%A0%E9%81%93%EF%BC%89%21%E7%AC%AC%E4%B8%80%E9%A2%98%EF%BC%9A%282%E5%8F%882%2F9%2B3%E5%8F%884%2F7%2B1%E5%8F%884%2F11%29%2F%283%2F11%2B5%2F7%2B4%2F9%29%E5%85%B6%E4%B8%AD%E7%9A%84%2F%E5%85%A8%E6%98%AF%E5%88%86%E6%95%B0%E7%BA%BF.%E7%AC%AC%E4%BA%8C%E9%A2%98%EF%BC%9Aa%E3%80%81b%E6%98%AF%E5%A4%A7%E4%BA%8E0%E7%9A%84%E8%87%AA%E7%84%B6%E6%95%B0%2Ck%E6%98%AF%E5%9B%BA%E5%AE%9A%E4%B8%8D%E5%8F%98%E7%9A%84%E6%95%B0.%E5%AE%9A%E4%B9%89%EF%BC%9Aa%2Ab%3D1%2Fab%2B1%2Fb%EF%BC%88k%2Ba%29+%E8%8B%A51%2A1%3D1%E5%8F%881%2F3%2C%E6%B1%822007%2A2008%E7%9A%84)
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