1per4 ditambah 1per5 ditambah 1per5 Di bikin jalan

Mapel : Matematika
Bab : Pecahan

[tex] \frac{1}{4} + \frac{1}{5} + \frac{1}{5} \\ = \frac{1}{4} + \frac{2}{5} \\ = \frac{(20 \div 4 \times 1) + (20 \div 5 \times 2)}{20} \\ = \frac{(5 \times 1) + (4 \times 2)}{20} \\ = \frac{5 + 8}{20} \\ = \frac{13}{20} \\ = 0.65[/tex]

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