First, multiply each side of the equation by #color(red)(12)# to eliminate the fractions while keeping the equation balanced:
#color(red)(12) xx -x/4 = color(red)(12) xx (2x)/3#
#cancel(color(red)(12))color(red)(3) xx -x/color(red)(cancel(color(black)(4))) = cancel(color(red)(12))color(red)(4) xx (2x)/color(red)(cancel(color(black)(3)))#
#color(red)(3) xx -x = color(red)(4) xx 2x#
#-3x = 8x#
Next, add #color(red)(3x)# to each side of the equation to isolate the #x# term while keeping the equation balanced:
#-3x + color(red)(3x) = 8x + color(red)(3x)#
#0 = (8 + color(red)(3))x#
#0 = 11x#
Now, divide each side of the equation by #color(red)(11)# to solve for #x# while keeping the equation balanced:
#0/color(red)(11) = (11x)/color(red)(11)#
#0 = (color(red)(cancel(color(black)(11)))x)/cancel(color(red)(11))#
#0 = x#
#x = 0#