1. \( \frac{5}{7}-\frac{2}{3}= \)

To solve \( \frac{5}{7} - \frac{2}{3} \), first find a common denominator, which is 21. Rewriting the fractions gives us \( \frac{15}{21} - \frac{14}{21} \). Subtracting these, we get \( \frac{1}{21} \). So, the answer is \( \frac{1}{21} \). Using fractional calculations can be quite handy in real life! For example, when cooking, recipes often require adjustments, and fractions help with scaling ingredients. Imagine you need to double a recipe but work with fractions—knowing how to subtract and add fractions comes in super handy! Just think of it as a fun puzzle to get the right flavors.