{2(x-y)/3=x+y/4-1 6(x+y)=4(2x-y)+16

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{2(x-y)/3=x+y/4-16(x+y)=4(2x-y)+16{2(x-y)/3=x+y/4-16(x+y)=4(2x-y)+16{2(x-y)/3=x+y/4-16(x+y)=4(2x-y)+

{2(x-y)/3=x+y/4-1 6(x+y)=4(2x-y)+16
{2(x-y)/3=x+y/4-1 6(x+y)=4(2x-y)+16

{2(x-y)/3=x+y/4-1 6(x+y)=4(2x-y)+16
2(x-y)/3=(x+y)/4-1
两边乘12
8x-8y=3x+3y-12
5x-11y=-12 (1)
6(x+y)=4(2x-y)+16
3x+3y=4x-2y+8
x-5y=-8 (2)
(1)-(2)×5
14y=28
y=2
x=5y-8=2

-1/a>=0
所以a<0
|a|=-a
所以原式=a√(-a)/|a|=-√(-a)
96比16=6比1
0.42比0.96=7比16
0.5比4分之3=2比3
12分之5时比45分=25比45=5比9