Question 29909
{{{ (3x^3)/(12x^2+9x) }}} fator out a 3x from the denom.
{{{ (3x^3)/(3x)(4x+3) }}} cancel the three in the numerator and denom
{{{ (x^3)/(x)(4x+3) }}} cancel and x in the numerator and denominator
{{{ (x^2)/(4x+3) }}} done