Respuesta :
Answer:
-20 =r
Step-by-step explanation:
4r - 8 = 5r + 12
Subtract 4r from each side
4r -4r- 8 = 5r + 12-4r
-8 = r+12
Subtract 12 from each side
-8-12 = r+12-12
-20 =r
Answer:
-20 =r
Step-by-step explanation:
4r - 8 = 5r + 12
Subtract 4r from each side
4r -4r- 8 = 5r + 12-4r
-8 = r+12
Subtract 12 from each side
-8-12 = r+12-12
-20 =r