8x-2(1-x)=7x-3(x-1)
8x-2+2x=7x-3x+3
10x-2=4x+3
10x-4x=3+2
6x=5
x=5/6
8x+2=7x-3
`````
8X+2=7X-3
X= -5
7X^2-8X+1=0,求X=?
7X^2-8X+1=0,求X等於幾?
7X^2-8X+1=0
(7x-1)(x-1)=0
x=1,x=1/7