Respuesta :
Answer:
12-1/2r => (13− 3/ 2 r)−(1−r)
r-13/6 => (7r-3/2)-(2/3+6r)
13r+20 => (6r+7)+(13+7r)
-12+r => (−8−r)+(2r−4)
Step-by-step explanation:
Answer:
12-1/2r => (13− 3/ 2 r)−(1−r)
r-13/6 => (7r-3/2)-(2/3+6r)
13r+20 => (6r+7)+(13+7r)
-12+r => (−8−r)+(2r−4)
Step-by-step explanation: