1、3.09减37/12除以1.15与1/12的和,所得的差的10%是多少?
人气:279 ℃ 时间:2019-08-26 07:22:09
解答
人是需要进步的,新年好!
1.15+1/12=23/20+1/12=69/60+5/60=74/60=37/30
37/12÷37/30=5/2=2.5
3.09-2.5=0.59
0.59×10%=0.059
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