Răspuns:
Explicație pas cu pas:
[tex]\frac{1}{100}+\frac{2}{100}+... +\frac{9}{100} =\frac{1+2+...+9}{100}=\frac{45}{100} =0,45[/tex]
[tex]\frac{91}{100}+\frac{92}{100} +...+\frac{99}{100} =\frac{91+92+...+99}{100} =\frac{855}{100} =8,55[/tex]
0,45+8,55=9