[tex]\it 1,1(3) + 0,(6) + 1,25 = 1+\dfrac{13-1}{90} +\dfrac{6}{9}+1+\dfrac{25}{100}=2+\dfrac{\ 12^{(6}}{90}+\dfrac{\ 6^{(3}}{9}+\dfrac{\ 25^{(25}}{100}=\\ \\ \\=2+\dfrac{^{4)}2}{\ 15}+\dfrac{^{20)}2}{\ 3}+\dfrac{^{15)}1}{\ 4}=2+\dfrac{8+40+15}{60}=2+\dfrac{\ 63^{(3}}{60} =\\ \\ \\=2+\dfrac{21}{20}=2+1\dfrac{1}{20}=3\dfrac{1}{20}[/tex]