2x-1 / 2 [X-1 / 2 (x-1)] = 2 / 3 (x-1) 1.2 (1.8-8x) - 2 (1.3-3x) = 0.3 (5x-0.4) 1 × 2 x = 2 × 3 x +... + 2007 × 2008 x = 2007 It's better to have a process, good chase 30 points!

2x-1 / 2 [X-1 / 2 (x-1)] = 2 / 3 (x-1) 1.2 (1.8-8x) - 2 (1.3-3x) = 0.3 (5x-0.4) 1 × 2 x = 2 × 3 x +... + 2007 × 2008 x = 2007 It's better to have a process, good chase 30 points!

1.X=-5/13
2.X=131/491
3.X=2008
1.2x-0.5x+0.25(x-1)=2/3(x-1)
7/4x-2/3x=1/4-2/3
21x-8x=3-8
13x=-5
x=-13/5
2.90-400x-39+9x=100x-80
491x=131
x=131/491
3.x-1/2x+1/2x-1/3x+1/3x-1/4x+1/4x-1/5x.+1/2007x-1/2008x=2007
x-1/2008x=2007
2007/2008x=2007
x=2008
x