(4.85/5/18-3.6+6.15*3又3/5)(1-8/9)

问题描述:

(4.85/5/18-3.6+6.15*3又3/5)(1-8/9)

(4.85/5/18-3.6+6.15*3又3/5)(1-8/9)
=(4.85×3.6-3.6+6.15×3.6)×(1/9)
=(4.85-1+6.15)×3.6×(1/9)
=10×3.6×(1/9)
=4;
如果本题有什么不明白可以追问,