如果方程(x-4)/3-8=-(x+2)/2的解与方程4x-(3a-5)=6x+2a-5的解相同,求式子a-1/a的值
人气:246 ℃ 时间:2019-09-21 18:53:13
解答
(x-4)/3-8=-(x+2)/2
2(x-4)-48=-3(x+2)
2x-8-48=-3x-6
2x+3x=56-6
5x=50
x=10
将x=10代入4x-(3a-5)=6x+2a-5得:
4*10-3a+5=6*10+2a-5
2a+3a=45-55
5a=-10
a=-2
(a-1)/a=(-2-1)/(-2)=1.5
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