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四十六乘以五十七加上二十八乘以八十六的简便运算怎么?
展开全部
46x57+28x86
=46x57+28x2x43
=46x57+56x43
=46x57+46x43+10x43
=46x(57+43)+430
=46x100+430
=4600+430
=5030
=46x57+28x2x43
=46x57+56x43
=46x57+46x43+10x43
=46x(57+43)+430
=46x100+430
=4600+430
=5030
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