Question

0,(5)+1,2 ???? Rapid va rog!!!

Answer 1

0,(5)=5/9
1,2=12/10
5/9+12/10=(50+108)/90=158/90=1,7(5)

Answer 2

$0,(5)+1,2 = \dfrac{5}{9}+\dfrac{12}{10} = ^{\Big{5)}}\dfrac{5}{9}+^{\Big{9)}}\dfrac{6}{5} =\dfrac{25+54}{45} = \dfrac{79}{45} =1,7(5)$

sau: 

$0,(5)+1,2 \approx 0,55555555...+1,20000000... \approx 1,75555555... = 1,7(5)$