hasil dari 3(4x+y)/x+5(3x-y)/3x

{3(4x+y)/x} + {5(3x-y)/3x} =.....

jawab:
={3(4x+y)/x} + {5(3x-y)/3x}
= (12x + 3y)/x + (15x-5y) / 3x
= {3(12x+3y) + 1(15x-5y)} / 3x
= (36x + 15x + 9y - 5y) / 3x
= (51x+4y) / 3x