-3 1/4 : 2 1/3 - (-3 1/4) + (-3 1/2) . (-2 1/3) =

= -3 1/4 : 2 1/3 - (-3 1/4) + (-3 1/2) × (-2 1/3)
= -13/4 : 7/3 + 13/4 - 7/2 × (-7/3)
= -13/4 × 3/7 + 13/4 - 7/2 × (-7/3)
= -39/28 + 13/4 + 49/6
-39 + 91
= ------------ + 49/6
28
= 52/28 + 49/6
= 13/7 + 49/6
78 + 343
= --------------
42
421
= -----
42