先找规律,再求x的值.(9,3)=12,(7,5)=4,(10,3)=14,(2/3,1/4)=5/6,计算:(1/2,x)=2/5
人气:301 ℃ 时间:2020-04-12 01:14:29
解答
(9-3)*2=12
(7-5)*2=4
(10-3)*2=14
(2/3-1/4)*2=5/6
(1/2-x)*2=2/5
x=3/10
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