Explicație pas cu pas:
1.
[tex]0.3 = \frac{3}{10}[/tex]
[tex]0.31 = \frac{31}{100}[/tex]
[tex]0.6 = \frac{6}{10} = \frac{3}{5} [/tex]
[tex]12.5 = \frac{125}{10} = \frac{25}{2}[/tex]
[tex]2.512 = \frac{2512}{1000} = \frac{314}{125}[/tex]
2.
[tex]0.(4) = \frac{4}{9}[/tex]
[tex]0.(47) = \frac{47}{99}[/tex]
[tex]1.(6) = \frac{16 - 1}{9} = \frac{15}{9} = \frac{5}{3}[/tex]
[tex]12.(5) = \frac{125 - 12}{9} = \frac{113}{9} [/tex]
[tex]2.(512) = \frac{2512 - 2}{999} = \frac{2510}{999}[/tex]
3.
[tex]0.8(5) = \frac{85 - 8}{90} = \frac{77}{90}[/tex]
[tex]0.7(31) = \frac{731 - 7}{990} = \frac{724}{990} = \frac{362}{495}[/tex]
[tex]1.2(6) = \frac{126 - 12}{90} = \frac{114}{90} = \frac{57}{45}[/tex]
[tex]2.4(512) = \frac{24512 - 24}{9990} = \frac{24488}{9990} = \frac{12244}{4995} [/tex]
