不知原题是左边还是右边一竖的,
8/（2x-1）=4/9 8/2x-1=4/9
俩边乘以9*(2x-1) 俩边乘以9*2x
9* 8=4*(2x-1) 9*8-9*2x =4*2x
8x-4=72 72-18x=8x
8x=76 26x=72
x=9.5 x=36/13 不知原题是左边还是右边一竖的,
8/（2x-1）=4/9 8/2x-1=4/9
俩边乘以9*(2x-1) 俩边乘以9*2x
9* 8=4*(2x-1) 9*8-9*2x =4*2x
8x-4=72 72-18x=8x
8x=76 26x=72
x=9.5 x=36/13