4x+2/3-2x+1/2=6x+3/4

4x – 2 x – 6x = 3/4 – 2/3 -1/2
-4x = – 5/12
x = – 5/12 : 4
x = -5/12 x -1/4
x = 5/48

2x + 7/6 = 6x + 3/4
7/6 – 3/4 = 4x
5/12 = 4x
48x = 5
x = 5/48