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2/33+4/33+6/33+8/33+10/33+14/33+16/33改写成乘法算式并计算
人气:173 ℃ 时间:2019-10-11 20:42:11
解答
2/33+4/33+6/33+8/33+10/33+14/33+16/33
=1/33×(2+4+6+8+10+14+16)
=1/33×60
=20/11
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