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2.(1 i 1/6 - 5 i 3/4) * (-12) : 1,1= (1 2/12 - 5 9/12)*(-12) : 11/10 = (- 4 7/12)*(-12) * 10/11 = (-55/12)*(-12)*10/11 = 50
3. (-0,3)do potęgi 3 : (-1 + 2/5)do potęgi 2= (-0,027) : (-3/5)^2 = (-0,027): 9/25 = - 27/1000 * 25/9 = 3/40