
17分之5x24分之9加17分之9乘24分之7的简便运算
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17分之5x24分之9加17分之9乘24分之7
=5/17x9/24+9/17x7/24
=5/17x9/24+7/17+9/24
=(5/17+7/17)x9/24
=12/17x9/24
=9/34
=5/17x9/24+9/17x7/24
=5/17x9/24+7/17+9/24
=(5/17+7/17)x9/24
=12/17x9/24
=9/34
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