567*345+222分之567+345*566怎么简算
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(567+345*566)/(567*345+222)
=【345*(567-1)+567】/(345*567+222)
=(345*567+567-345)/(345*567+222)
=(345*567+222)/(345*567+222)
=1
=【345*(567-1)+567】/(345*567+222)
=(345*567+567-345)/(345*567+222)
=(345*567+222)/(345*567+222)
=1
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