47×43/49怎么简便计算?

日期:2021-11-05 07:48:27 人气:1

47×43/49怎么简便计算?

47×43/49
=(49-2)×43/49
=49×43/49-2×43/49
=43-86/49
=43-1又37/49
=41又12/49
    A+
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