Question

1supra2-1supra6+0,(6)

Answer 1

1/2-1/6+6/9=1/2-1/6+2/3=3/6-1/6+4/6=6/6=1

Answer 2

$\frac{1}{2} - \frac{1}{6} +0,(6)= \\ \\ \frac{1}{2} - \frac{1}{6} + \frac{6}{9} = \\ \\ \frac{1}{2} - \frac{1}{6} + \frac{2}{3} = \\ \\ \frac{3-1+4}{6} = \\ \\ = \frac{6}{6}=1 \\ \\ \frac{1}{2} - \frac{1}{6} +0,(6)=1$