Ответ:

х = 33/16

Пошаговое объяснение:

[tex]2x - \frac{3}{8} = \frac{15}{4}[/tex]

[tex]2x = \frac{15}{4} + \frac{3}{8}[/tex]

[tex]2x = \frac{33}{8}[/tex]

[tex]x = \frac{33}{8} : 2\\\\x = \frac{33}{8} * \frac{1}{2} = \frac{33}{16}[/tex]

проверка

[tex]2 * \frac{33}{16} - \frac{3}{8} = \frac{15}{4} \\\\\frac{66}{16} - \frac{3}{8} = \frac{15}{4} \\\\\frac{60}{16} = \frac{15}{4} \\\\\frac{15}{4} = \frac{15}{4}[/tex]