5,7/5,1+3,2/1,7

To solve the expression \( \frac{5.7}{5.1} + \frac{3.2}{1.7} \), we can first calculate each division separately and then add the results together.

1. Calculate \( \frac{5.7}{5.1} \): \[ \frac{5.7}{5.1} \approx 1.1176 \]

2. Calculate \( \frac{3.2}{1.7} \): \[ \frac{3.2}{1.7} \approx 1.8824 \]

3. Now, add the two results together: \[ 1.1176 + 1.8824 = 3.0000 \]

Thus, the final answer is: \[ \frac{5.7}{5.1} + \frac{3.2}{1.7} \approx 3.00 \]