Answer:
4m-24n+3..... We only hv to add like terms basing to their signs
Step-by-step explanation:
we have
17m-12n-1+4-13m-12n
Group terms that contain the same variable
(17m-13m)+(-12n-12n)+(-1+4)
Combine like terms
(4m)+(-24n)+(3)
4m-24n+3
mark brainliest:)
