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e) 3×(½×3) - 4(⅓×(-4) +4×(½×(-4) - 3(⅓×3) =
3 × ³/₂ - 4 × (- ⁴/₃) + 4 × (- ⁴/₂) - 3 × 1 =
⁹/₂ + ¹⁶/₃ - ¹⁶/₂ - ⁹/₃ =
⁹/₂ - ¹⁶/₂ + ¹⁶/₃ - ⁹/₃ =
- ⁷/₂ + ⁷/₃ = - ²¹/₆ + ¹⁴/₆ = - ⁷/₆
e) 3*1/2*3 - 4*1/3*-4 + 4*1/2*-4 - 3*1/3*3 = 4,5 - 16/3 -8 - 3 = -216/30 = -7,2