It's a logarithmic worksheet and O can't solve it.

${\mathrm{log}}_{a}x=p$, ${\mathrm{log}}_{b}x=q$ , ${\mathrm{log}}_{abc}x$=r. What is ${\mathrm{log}}_{c}x$?.. It's on my math homework can someone solve it cause I need it.

${\mathrm{log}}_{a}x=p$, ${\mathrm{log}}_{b}x=q$ , ${\mathrm{log}}_{abc}x$=r. What is ${\mathrm{log}}_{c}x$?.. It's on my math homework can someone solve it cause I need it.