1/(x-1)-1/(x-2)=1/(x-3)-1/(x-4)

熱心網(wǎng)友

1/(x-1)-1/(x-2)=1/(x-3)-1/(x-4)化簡(jiǎn)為:[(x-2)-(x-1)]/[(x-1)(x-2)]=[(x-4)-(x-3)]/[(x-3)(x-4)]即:-1/[(x-1)(x-2)]=-1/[(x-3)(x-4)]即:(x-1)(x-2)=(x-3)(x-4) 且x不為1. 2. 3. 4解得:x=2.5