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\\ 3x = x + y \\ 2x = y \\ \frac{x}{x - 2x} = b \\ b = \frac{x}{ - x} = > b = - 1 \\ \frac{x}{x - y} = - 1 " alt=" \frac{x}{x - y} - {?} \\ \frac{x + y}{x} = 3 = > \\ 3x = x + y \\ 2x = y \\ \frac{x}{x - 2x} = b \\ b = \frac{x}{ - x} = > b = - 1 \\ \frac{x}{x - y} = - 1 " align="absmiddle" class="latex-formula">
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