Respuesta :

Answer: −x+9y−5

Step-by-step explanation:

(12x−5y−1)+(17y−4−13x−3y) collect like terms

(12x−5y−1)+((17y−3y)−4−13x) simplify

12x−5y−1+14y−4−13x collect like terms again

(12x−13x)+(−5y+14y)+(−1−4) simplify

-x+9y−5

Hope this helps, now you know the answer and how to do it. HAVE A BLESSED AND WONDERFUL DAY! :-)  

- Cutiepatutie ☺❀❤