+4

$$\frac{3}{2} + 4 \frac{2}{9} - 1 \frac{1}{27} = \frac{3}{2} + \frac{38}{9} - \frac{28}{27} = \frac{3 \cdot 27 \cdot 9 + 38 \cdot 2 \cdot 27 - 28 \cdot 2 \cdot 9}{2 \cdot 9 \cdot 27} = \frac{729 + 2052 - 504}{486} = \frac{2277}{486} = \frac{253}{54} = 4 \frac{37}{54}$$

Ответ: $$4 \frac{37}{54}$$