To make the expression \(18 - 9 \frac{4}{9} + \frac{7}{9} - 8\) easiest to add, you should group the integer parts together and the fractional parts together. The best option from your responses is:
(18 − 8) + (−9 \frac{4}{9} + \frac{7}{9}) Left Parenthesis 18 minus 8 Right Parenthesis plus Left Parenthesis negative 9 Start Fraction 4 over 9 End Fraction plus Start Fraction 7 over 9 End Fraction Right Parenthesis
This groups together the integers \(18 - 8\) and the fractions \(-9\frac{4}{9} + \frac{7}{9}\), making it easier to compute each part step by step.