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1/4×(4.85÷5/18-3.6+6.15×3又3/5)简便运算
人气:211 ℃ 时间:2019-10-02 20:50:04
解答
1/4×(4.85÷5/18-3.6+6.15×3又3/5)
=1/4×(4.85×3.6-3.6+6.15×3.6)
=1/4×3.6×(4.85-1+6.15)
=0.9×10
=9
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