x-y=10 (1-1/4)x=(1-1/6)y
3个回答
(1-1/4)x=(1-1/6)y
3//4x=5/6y
y=9/10x
代入x-y=10
x-9/10x=10
1/10x=10
x=100
y=9/10x=90
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