Răspuns:
[tex]a) \: \frac{x}{15} = \frac{3}{5} = > x \times 5 = 15 \times 3[/tex]
[tex]5x = 45 = > x = 45 \div 5 = > x = 9[/tex]
[tex]b) \: \frac{3}{2} = \frac{x + 1}{6} = > 3 \times 6 = 2(x + 1)[/tex]
[tex]18 = 2x + 2 = > 2x = 18 - 2[/tex]
[tex]2x = 16 = > x = 16 \div 2 = > x = 8[/tex]
==strphcriz09==
