Respuesta :

8. 4j -2j -5k +3k (combine like terms)

2j -2k 

B

9. -6m+4m +2n-3n
-2m-1n

D

10. ( 2x-1) + (3x-1) +(3x-1) 
2x+3x+3x -1-1-1
8x-3

D
8. B   9. D   10. D  11A. -4r+2s-9

For all of them you just combine like terms, or in other words combine the sections that have the same variable.