更新时间2018-09-01 15:43:53
解方程:2x-1/2[x-1/2(x-1)]=1/3(x-1)
求解答
2x-1/2[x-1/2(x-1)]=1/3(x-1)
两边同时乘以12
24x-6*[x-1/2(x-1)]=4(x-1)
24x-6x+3(x-1)=4(x-1)
18x+3x-3=4x-4
21x-3=4x-4
21x-4x=3-4
17x=-1
x=-1/17
2x-1/2[x-1/2(x-1)]=1/3(x-1)
解:2x-1/2(x-1/2x+1/2)=1/3x-1/3
2x-1/2(1/2x+1/2)=1/3x-1/3
2x-1/4x-1/4-1/3x+1/3=0——方程两边乘以12
24x-3x-3-4x+4=0
17x+1=0
17x=-1
x=-1/17