Question

x - 1 /2 - x -2 / 3 - x - 3 / 4 = 0​

Answer 1

$x - \frac{1}{2} - x - \frac{2}{3} - x - \frac{3}{4} = 0 \\ = > x - x - x - \frac{1}{2} - \frac{2}{3} - \frac{3}{4} = 0 \\ = > - x - \frac{(1 \times 3) - (2 \times 2)}{(2 \times 3)} - \frac{3}{4} = 0 \\ = > - x - (\frac{3 - 4}{6}) - \frac{3}{4} = 0 \\ = > - ( \frac{ - 1}{6} ) - \frac{3}{4} =0 + x \\ = > \frac{1}{6} - \frac{3}{4} = x \\ = > \frac{(1 \times 2) - (3 \times 3)}{12} = x \\ = > \frac{2 - 9}{12} = x \\ = > \frac{ - 7}{12} = x$

so, x= -7/12

Hope this helps you.