Question 80273
{{{((6q)/m)/(m/2t)}}} is the same as {{{((6q)/m)*(2t/m)}}} all you did was switched the division sign to multiplication and flipped numerator and denominator of the bottom portion.
so {{{((6q)/m)*(2t/m)=1}}}, after you multiply the terms you get
{{{12qt/m^2=1}}} cris cros multiply (remember 1 is the same as {{{1/1}}}
then you get
{{{12qt=m^2}}} now divide both sides by 12t and you get
{{{q=m^2/12t}}}

voila :)