Verified Answer :

\(\frac{3}{7} x + \frac{5}{8} - \frac{3}{14}x + \frac{1}{4} =\)
\(\frac{3}{7} x - \frac{3}{14} x = - \frac{5}{8} -\frac{1}{4}\)

MMC (7,8,14,4)

7,8,14,4 | 2
7, 4, 7, 2| 2
7, 2, 7, 1| 2
7, 1, 7, 1| 7
1, 1, 1, 1____ 222*7 = 56

Solving
\(\frac{3}{7} x - \frac{3}{14} x = - \frac{5}{8} - \frac{1}{4}\)
\(\frac{(56\div7*3)}{56} x - \frac{(56\div14*3)}{56} x = - \frac{(56\div8*5)}{56} -\frac{(56\div4*1)}{56}\)
\(\frac{24}{56}x - \frac{12}{56} x = - \frac{35}{56} - \frac{14}{56}\)
Cancel the denominators (56)
\(24x - 12x = - 35 - 14\)
\(12x = - 49\)
\(\boxed{x = - \frac{49}{12}}\)