Respuesta :

Step-by-step explanation:

1) -12y -9 -8y +24= -20y +15

2) 5b -20 +12= 5b-8

Answer:

1. -20y-3.    2. 5b-8

Step-by-step explanation:

1. -12y-9-8y+6

-20y-3

2. 5b-20+12

5b-8