[3/4-(7/16-0.25)]*17/9简算

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[3/4-(7/16-0.25)]*17/9简算
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[3/4-(7/16-0.25)]*17/9简算
[3/4-(7/16-0.25)]*17/9简算

[3/4-(7/16-0.25)]*17/9简算
[3/4-(7/16-0.25)]*17/9
=(3/4+1/4-7/16)*(17/9)
=(9/16)(17/9)
=17/16