Răspuns:
[tex] = - \frac{71}{72} \\ [/tex]
Explicație pas cu pas:
[tex] - \frac{5}{12} \times (4 + ( - \frac{3}{10} )) + \frac{5}{9} = \\ [/tex]
[tex] - \frac{5}{12} \times (4 - \frac{3}{10} ) + \frac{5}{9} = \\ [/tex]
[tex] - \frac{5}{12} \times \frac{37}{10} + \frac{5}{9} = - \frac{1}{12} \times \frac{37}{2} + \frac{5}{9} = \\ [/tex]
[tex]- \frac{37}{24} + \frac{5}{9} =-\frac{111}{72} + \frac{40}{72} = \boxed{ - \frac{71}{72} }[/tex]
