Bună! ✨
[tex]( - \frac { 9 } { 10 } ) + ( - \frac { 7 } { 12 } ) + ( + \frac { 19 } { 30 } ) + ( + \frac { 1 } { 5 } ) \\ \\ -\frac{54}{60}-\frac{35}{60}+\frac{19}{30}+\frac{1}{5} \\ \\ \frac{-54-35}{60}+\frac{19}{30}+\frac{1}{5} \\ \\ -\frac{89}{60}+\frac{19}{30}+\frac{1}{5} \\ \\ -\frac{89}{60}+\frac{38}{60}+\frac{1}{5} \\ \\ \frac{-89+38}{60}+\frac{1}{5} \\ \\ \frac{-51}{60}+\frac{1}{5} \\ \\ -\frac{17}{20}+\frac{1}{5} \\ \\ -\frac{17}{20}+\frac{4}{20} \\ \\ \frac{-17+4}{20} \\ \\ \boxed{ - \frac{13}{20}}[/tex]
✔️ Succes! ✔️
