\(\frac{9}{14}+\frac{14}{35}=\frac{45}{70}+\frac{28}{70}=\frac{45+28}{70}=\frac{73}{70}\)
9/14 + 13/35 = 9x5/14x5 + 13x2/35x2 = 45/70 + 26/70 = 71/70
\(\frac{9}{14}+\frac{13}{15}=\frac{135}{210}+\frac{182}{210}\)
\(=\frac{317}{210}\) \(=\frac{317}{210}\)