Let u(x) and v(x) be differentiable functions such that $\frac{\mathrm{u}\left(\mathrm{x}\right)}{\mathrm{v}\left(\mathrm{x}\right)}=7. \mathrm{If} \frac{\mathrm{u}\text{'}\left(\mathrm{x}\right)}{\mathrm{v}\text{'}\left(\mathrm{x}\right)}=\mathrm{p} \mathrm{and} {\left(\frac{\mathrm{u}\left(\mathrm{x}\right)}{\mathrm{v}\left(\mathrm{x}\right)}\right)}^{\text{'}}=\mathrm{q}, \mathrm{then} \frac{\mathrm{p}+\mathrm{q}}{\mathrm{p}-\mathrm{q}}$ has the value equal to