No question is asked, but I guess you would like to simplify this equation into the y = mx +b form so you can find the slope and y intercept.
Multiply both terms inside the parenthesis by -3
6x-3y +3 = 4x +8 subtract 6x from both sides
-3y +3 = -2x +8 subtract 3 from both sides
-3y = -2x +5 divide both sides by -3
y = (2/3)x - 5/3
Your slope is 2/3 and your y intercept where x = 0 is -5/3