2x-4分之x-3除以(x-2分之5-x-2)

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2x-4分之x-3除以(x-2分之5-x-2)
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2x-4分之x-3除以(x-2分之5-x-2)
2x-4分之x-3除以(x-2分之5-x-2)

2x-4分之x-3除以(x-2分之5-x-2)

2x-4分之x-3除以(x-2分之5-x-2)
=(X-3)/2(x-2) 除以[((5-x)-2(x-2))/(x-2)]
=(X-3)/2(x-2) 除以[(5-x-2x+4))/(x-2)]
=(X-3)/2(x-2) 除以[-3(x-3)/(x-2)]
=(X-3)/2(x-2) *[-(x-2)/(x-3)]
=-1/2