Question

12supra17+(17supra19+5supra17)+2supra 19

Answer 1

$\frac{12}{17} + ( \frac{17}{19} + \frac{5}{17}) + \frac{2}{19} = \frac{12}{17} + \frac{384}{323} + \frac{2}{19} = \frac{646}{323} = 2$