Question

x+ 0,(6) = 1,3 , xeQ

Answer 1

$\displaystyle x+0,(6)=1,3 \\ x+ \frac{2}{3} = \frac{13}{10} \\ 30x+20=39 \\ 30x=39-20 \\ 30x=19 \\ x= \frac{19}{30}$