Respuesta :

(15X+3+5X+2-6X+41X-1)

15X + 5X - 6X + 41X = 55X

(31X+1-9X+2X+4-18X-1)

31X - 9X - 18X = 4X

(55X + 4) - (4X + 6)

55X + 4 - 4X - 6

51X - 2