Bună! ⭐
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[tex]\frac{7}{23}+\frac{5}{23}-\frac{x}{23} =\frac{2}{23} <=>[/tex]
[tex]<=> -\frac{x}{23}=-\frac{7}{23}-\frac{5}{23}+\frac{2}{23} <=>[/tex]
[tex]<=> - \frac{x}{23} =\frac{-7-5+2}{23} <=>[/tex]
[tex]<=> -\frac{x}{23 } =-\frac{10}{23} => {\boxed{\mathbf {x=10}}[/tex]
sau
[tex]\frac{7}{23}+\frac{5}{23}-\frac{x}{23} =\frac{2}{23} /*23<=>[/tex]
[tex]<=>7+5-x=2<=>[/tex]
[tex]<=> 12-2=x => {\boxed{\mathbf {10=x}}[/tex]
