You can put this solution on YOUR website! (x/3+3/4)(3x/4-3/5)
(4x+9/12)(15x-12/20)
(4x+9)(15x-12)/(12)(20)
60X^2-48x+135x-108/(12)(20)
60X^2+87x-108/(12)(20)
put 3 in factor in the numerator.
3(20x^2+29x-36)/(12)(20) simplify the numerator and the denominator by 3
20x^2+29x-36/80
The answer is : 20x^2+29x-36/80