Multiply both sides by 4, to get:
4y = 4[ ( ¾)x + 2 ]

Multiply out right side using a(b+c)=ab+ac:
4y = 4( ¾ )x + 4(2)
4y = 3x + 8

Subtract 8 from both sides:
4y - 8 = 3x

Divide both sides by 3:

x = 4y - 8 3