Answer:
72
Step-by-step explanation:
x in (-oo:+oo)
(x/4)/3 = 6 // - 6
(x/4)/3-6 = 0
1/12*x-6 = 0 // + 6
1/12*x = 6 // : 1/12
x = 6/1/12
x = 72