Răspuns:
8.
[tex]x - \frac{2}{5} = \frac{5}{9} [/tex]
[tex]x = \frac{2}{5} + \frac{5}{9}= \frac{18 + 25}{45} = \frac{43}{45} [/tex]
9.
[tex] \frac{3}{5} - x = \frac{1}{8} \\ x = \frac{3}{5} - \frac{1}{8} \\ x = \frac{24 - 5}{40} = \frac{19}{40} [/tex]
Explicație pas cu pas:
Succes!
