Răspuns :
[tex]x - nr.[/tex]
[tex]x + \frac{x}{2} + 2x = 756 \: | \times 2[/tex]
[tex]2x + x + 4x = 1512[/tex]
[tex]7x = 1512 \: | \div 7[/tex]
[tex]x = 216[/tex]
[tex]x + \frac{x}{2} + 2x = 756 \: | \times 2[/tex]
[tex]2x + x + 4x = 1512[/tex]
[tex]7x = 1512 \: | \div 7[/tex]
[tex]x = 216[/tex]