567*345+222分之567+345*566怎么简算
1个回答
2016-01-13
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(567+345*566)/(567*345+222)
=[567+345*(567-1)]/(567*345+222)
=(567+345*567-345)/(567*345+222)
=(567*345+222)/(567*345+222)
=1
=[567+345*(567-1)]/(567*345+222)
=(567+345*567-345)/(567*345+222)
=(567*345+222)/(567*345+222)
=1
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