Respuesta :

UiLevi

Answer: A= -3

Step-by-step explanation: Distribute the four into the 1 and 3 then combine the 4 and 2 then subtract the 6 from both sides then divide -12a by 36 and you will get -3

Answer:

Step-by-step explanation:

2+4=6

6x1=6 and 6x3a=18a

6-18a=42

42-6=36

18a=36

18a/18 and 36/18

a=2