Question

x sobre 4_xsobre 6igual a 3

Answer 1

_x_ - _x_ = 3   mmc= 12
  4       6

3x - 2x = 36
x=36

Answer 2

x/4 - x/6 = 3      --->    mmc(4, 6) = 12
3x - 2x = 36
x = 36


S = { 36 }