Notăm x - numărul căutat.
[tex] \frac{ ^{6)} x}{5} + \frac{^{5)} 5x}{6} = 115[/tex]
[tex] \frac{6x}{30} + \frac{25x}{30} = 115[/tex]
[tex] \frac{31x}{30} = 115[/tex]
[tex]31x = 115 \times 30[/tex]
[tex]31x = 3450[/tex]
[tex]x = 3450 \div 31[/tex]
[tex]x = \frac{3450}{31} [/tex]
