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(567+345+566)/(567*345+222)注:*表示乘号,题目没有错误.
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(567+345+566)/(567*345+222) 注:*表示乘号,题目没有错误.
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答案和解析
这类题原题应是(567+345×566)/(567×345+222).
(567+345×566)/(567×345+222)
=(567+345×566)/(566×345+345×1+222)
=(567+345×566)/(567+345×566)
=1
(567+345×566)/(567×345+222)
=(567+345×566)/(566×345+345×1+222)
=(567+345×566)/(567+345×566)
=1
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