Respuesta :
Answer:
a= -24
Step-by-step explanation:
-2a-9=39
-2a-9+9=39+9
-2a= 48
-2a/-2=48/-2
a=-24
Add nine on both sides
-2a-9=39
+9 +9
——————-
-2a = 48
Divide -2 on both sides.
-2a-9=39
+9 +9
——————-
-2a = 48
—— ——
-2 -2
a = -24
Add nine on both sides
-2a-9=39
+9 +9
——————-
-2a = 48
Divide -2 on both sides.
-2a-9=39
+9 +9
——————-
-2a = 48
—— ——
-2 -2
a = -24