Respuesta :
Answer:
a = -1
Step-by-step explanation:
-7a-6a=13
Combine like terms
-13a = 13
Divide by -13
-13a/-13 = 13/-13
a = -1
Answer:
a = -1
Step-by-step explanation:
-7a-6a=13
Combine like terms
-13a = 13
Divide by -13
-13a/-13 = 13/-13
a = -1