6,8/7,7-5,9/15,4

To calculate the expression \( \frac{6.8}{7.7} - \frac{5.9}{15.4} \), we can follow these steps: 1. Calculate \( \frac{6.8}{7.7} \): \[ \frac{6.8}{7.7} \approx 0.8825 \] 2. Calculate \( \frac{5.9}{15.4} \): \[ \frac{5.9}{15.4} \approx 0.3839 \] 3. Now, subtract the two results: \[ 0.8825 - 0.3839 \approx 0.4986 \] Thus, the result of the expression \( \frac{6.8}{7.7} - \frac{5.9}{15.4} \) is approximately \( 0.4986 \).