-2 x [- 1/4 ÷ (-3)]
-2x [- 1/4 ÷ (-3)]
[- 1/4 ÷ (-3)] -> -(1/4)/(-3/1) -> -(1*1/-4*3) -> -(-1/12) -> (1/12)
-2x(1/12) -> x*(2/1)*(1/12) -> x*(2/12) -> x(1/6)