1243617254 ,
x:y=2:3
3x=2y
y=1.5x
(2x+y)-1=(x-y)/3
(2x+1.5x)-1=(x-1.5x)/3
3.5x-1=-0.5x/3
10.5x-3=-0.5x
10.5x+0.5x=3
11x=3
x=3/11
y=1.5x=1.5×3/11=9/22
已知x:y=2:3,且(2x+y)-1=(x-y)/3,求x,y的值
已知x:y=2:3,且(2x+y)-1=(x-y)/3,求x,y的值
数学人气:432 ℃时间:2020-02-05 09:25:07
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