10y+x/10x+y=5/6

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10y+x/10x+y=5/6

10y+x/10x+y=5/6
10y+x/10x+y=5/6

10y+x/10x+y=5/6
我理解的公式:
(10y+x)/(10x+y)=5/6
6*(10y+x)=(10x+y)*5
60y+6x=50x+5y
55y=44x
5y=4x
y=4x/5
如果根据直面解释的话:
10y+x/10x+y=5/6
11y+1/10=5/6
11y=25/30-3/30
11y=22/30
y=2/30=1/15

11y=5/6-10
11y=-55/6
y=-55/66

10y+x/10x+y=5/6
(10y+x)*6=(10x+y)*5
60y+6x=50x+5y
54y=45x
y=5x/6

10y+x/10x+y=5/6
11y+1/10=5/6
11y=5/6-1/10
11y=11/15
y=11/15x1/11
y=1/15