Question

1/4x-1/2=3/4;7x-5/4=3/8；2x-1/6=5x+1/8；1/2x-7=9x-2/6；1/5x-1/2（3-2x）=1；2x+1/3-5x-1=1

谢谢各位大侠

Answer 1

1/4x-1/2=3/4
1/4X=3/4+1/2
1/4X=5/4
X=5/4*4
X=5

7x-5/4=3/8
7X=3/8+5/4
7X=13/8
X=(13/8)/7
X=13/56

2x-1/6=5x+1/8
5X-2X=-1/6-1/8
3X=-7/24
X=(-7/24)/3
X=-7/72

1/2x-7=9x-2/6
9X-1/2X=-7+2/6
17/2X=-20/3
X=(-20/3)/(17/2)
X=(-20/3)*(2/17)
X=-40/51

1/5x-1/2（3-2x）=1
1/5X-1/2*3+1/2*2x=1
1/5X+X-3/2=1
6/5X=1+3/2
6/5X=5/2
X=(5/2)*(5/6)
X=25/12

2x+1/3-5x-1=1
2X-5X=1+1-1/3
-3X=5/3
X=(5/3)*(-1/3)
X=-5/9