To find the total weight of the two pieces of cheese, simply add the weights together:
- Weight of the first piece: \( \frac{7}{8} \) kg
- Weight of the second piece: \( \frac{6}{8} \) kg
Now, add these two fractions:
\[ \frac{7}{8} + \frac{6}{8} = \frac{7 + 6}{8} = \frac{13}{8} \]
Now, convert \( \frac{13}{8} \) into a mixed number:
\[ \frac{13}{8} = 1 \frac{5}{8} \text{ kg} \]
Thus, the total weight of the two pieces of cheese is \( 1 \frac{5}{8} \) kg, or if you prefer, it can also be expressed as \( 1.625 \) kg.