berapa kah hasilnya?

Diketahui :
- 1 3/7 = 10/7
- 2 2/5 = 12/5
- 4/10

Ditanya : 1 3/7 + 2 2/5 + 4/10 = ....?

Penyelesaian :

[tex]1 \frac{3}{7} + 2\frac{2}{5} + \frac{4}{10} \\ = \frac{10}{7} + \frac{12}{5} + \frac{4}{10} \\ = \frac{10 \times 10 + 14 \times 12 + 7 \times 4}{70} \\ = \frac{100 + 168 + 28}{70} \\ = \frac{296}{70} \\ = 4 \frac{16}{70} [/tex]

Maaf Kalau Salah