what id 2/3-3/2/-4/3

(2/3) - (3/2) / (-4/3)

To divide fractions, multiply by the reciprocal:

(2/3) - (3/2) x (3/-4)

(2/3) - (9/-8)

(2/3) + (9/8)

Common denominator is 24:

(2/3)(8/8) + (9/8)(3/3)

16/24 + 27/24

43/24

1.7916666666...

$$\mathrm{ERROR}{\mathtt{\,-\,}}{\frac{{\mathtt{13}}}{{\mathtt{6}}}} = {\mathtt{\,-\,}}{\mathtt{2.166\: \!666\: \!666\: \!666\: \!666\: \!7}}\mathrm{ERROR}$$