Question 1090191
What does ":" mean in A)?
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B)
{{{((x-4)/(x-2))(2/(x^2-3x-4))-3/(x+1) =
   ((x-4)/(x-2))(2/((x-4)(x+1)))-3/(x+1)}}}

{{{((x-4)/(x-2))(2/(x^2-3x-4))-3/(x+1) =2/((x-2)(x+1))-3/(x+1)}}}
{{{((x-4)/(x-2))(2/(x^2-3x-4))-3/(x+1) =2/((x-2)(x+1))-(3(x-2))/((x-2)(x+1))}}}
{{{((x-4)/(x-2))(2/(x^2-3x-4))-3/(x+1) =(2-3x+4)/((x-2)(x+1))}}}
{{{((x-4)/(x-2))(2/(x^2-3x-4))-3/(x+1) =highlight_green((-3x+8)/((x-2)(x+1)))}}}