Question 666618
a) {{{m/4 + m/3 = (m/4)(3/3) + (m/3)(4/4)}}}
{{{3m/12 + 4m/12 = highlight_green(7m/12)}}}
...
b.  {{{x/2 - x - 1/2}}} = {{{x/2 - x(2/2) - 1/2}}} = {{{x/2 - 2x/2 - 1/2}}}
{{{highlight_green((-x - 1)/2)}}}
...
c.  {{{((8m^2)/x)(y/m^3) = 8m^2y/m^3x}}}
{{{(8cross(m^2)y)/(m^cross(3)x) = highlight_green(8y/mx)}}}
...
d.  {{{(2/3)/(5/3) = (2/3)(3/5)}}}
{{{(2/cross(3))(cross(3)/5) = highlight_green(2/5)}}}
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