计算:7/16×8/11+9/10÷11/8=?9.5×17-3又5/9×18=?

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计算:7/16×8/11+9/10÷11/8=?9.5×17-3又5/9×18=?

计算:7/16×8/11+9/10÷11/8=?9.5×17-3又5/9×18=?
计算:7/16×8/11+9/10÷11/8=?9.5×17-3又5/9×18=?

计算:7/16×8/11+9/10÷11/8=?9.5×17-3又5/9×18=?
7/16×8/11+9/10÷11/8
=7/16x8/11+9/10x8/11
=(7/16+9/10)x8/11
=107/80x8/11
=107/110
9.5×17-3又5/9×18
=9.5x17-32/9x18
=10x17-0.5x17-64
=170-64-8.5
=106-8.5
=97.5
如果本题有什么不明白可以追问,

方y-20xy平方
=5x(x的4次方-3x²y-4y²)