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1)simplifica fractiile 30/21;aa/aaaa;ab+ba/22. 2)Determina valorile naturale ale lui x pentru care x/3 <2/3 3)Determina valorile lui x pentru care x/12=1/6 Va multumesc

Răspuns :

[tex]1)~\frac{30}{21}=\frac{10}{7}[/tex]
[tex]\frac{\bar{aa}}{\bar{aaaa}}=\frac{\bar{aa}}{101\bar{aa}}=\frac{1}{101}[/tex]
[tex]\frac{\bar{ab}+\bar{ba}}{22}=\frac{10a+b+10b+a}{22}=\frac{11a+11b}{22}=\frac{11(a+b)}{22}=\frac{a+b}{2}[/tex]
[tex]2)~\frac{x}{3}<\frac{2}{3}[/tex]
[tex]x<2[/tex]
[tex]x\in\{0,1\}[/tex]
[tex]3)~\frac{x}{12}=\frac{1}{6}[/tex]
[tex]x=12\cdot\frac{1}{6}[/tex]
[tex]x=\frac{12}{6}=2[/tex]