4 1/5 -2 1/2 +1 2/5 Pliss jawab

[tex]4 \frac{1}{5} - 2 \frac{1}{2} + 1 \frac{2}{5} \\ = \frac{21}{5} - \frac{5}{2} + \frac{7}{5} \\ = \frac{2 \times 21 - 5 \times 5 + 2 \times 7}{10} \\ = \frac{42 - 25 + 14}{10} \\ = \frac{31}{10} \\ = 3.1[/tex]

Maaf Kalau Salah

4¹/5=21/5. 2¹/2=5/2. 1²/5=7/5
21/5-5/2=42-25=17/10+7/5=17+14=31/10 maaf jkslahsmogamembantu