x = \frac{3}{7}\\ Answer: \frac{3}{7}" alt="\frac{12}{x-1} = \frac{3}{2x-1} | *(x-1)(2x-1)\neq 0\\ 12(2x-1) = 3(x-1) | :3\\ 4(2x-1) = x - 1\\8x - 4 - x + 1 = 0\\7x - 3 = 0 => x = \frac{3}{7}\\ Answer: \frac{3}{7}" align="absmiddle" class="latex-formula">