简算 2又5/8-(15/7-1又3/8 +1又8/15) 计算 1/2+1/4+1/8+1/16简算2又5/8-(15/7-1又3/8 +1又8/15)计算1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256
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![简算 2又5/8-(15/7-1又3/8 +1又8/15) 计算 1/2+1/4+1/8+1/16简算2又5/8-(15/7-1又3/8 +1又8/15)计算1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256](/uploads/image/z/106631-71-1.jpg?t=%E7%AE%80%E7%AE%97+2%E5%8F%885%2F8-%EF%BC%8815%2F7-1%E5%8F%883%2F8+%2B1%E5%8F%888%2F15%EF%BC%89+%E8%AE%A1%E7%AE%97+1%EF%BC%8F2%2B1%EF%BC%8F4%2B1%EF%BC%8F8%2B1%EF%BC%8F16%E7%AE%80%E7%AE%972%E5%8F%885%2F8-%EF%BC%8815%2F7-1%E5%8F%883%2F8+%2B1%E5%8F%888%2F15%EF%BC%89%E8%AE%A1%E7%AE%971%EF%BC%8F2%2B1%EF%BC%8F4%2B1%EF%BC%8F8%2B1%EF%BC%8F16%2B1%EF%BC%8F32%2B1%EF%BC%8F64%2B1%EF%BC%8F128%2B1%EF%BC%8F256)
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简算 2又5/8-(15/7-1又3/8 +1又8/15) 计算 1/2+1/4+1/8+1/16简算2又5/8-(15/7-1又3/8 +1又8/15)计算1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256
简算 2又5/8-(15/7-1又3/8 +1又8/15) 计算 1/2+1/4+1/8+1/16
简算
2又5/8-(15/7-1又3/8 +1又8/15)
计算
1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256
简算 2又5/8-(15/7-1又3/8 +1又8/15) 计算 1/2+1/4+1/8+1/16简算2又5/8-(15/7-1又3/8 +1又8/15)计算1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256