W) \(\frac{9}{10} + 9 \frac{1}{10} = 9 + \frac{9}{10} + \frac{1}{10} = 9 + \frac{10}{10} = 9 + 1 = 10\)
C) \(1 \frac{12}{17} + 34 \frac{1}{17} = (1 + 34) + (\frac{12}{17} + \frac{1}{17}) = 35 + \frac{13}{17} = 35 \frac{13}{17}\)
\(67 \frac{7}{155} + 5 = 72 \frac{7}{155}\)