Respuesta :

Flamecaster

Answer:

a = -1

Step-by-step explanation:

9 = 4a+13         Given

-4 = 4a             Subtract 13 from both sides

-1 = a                 Divide both sides by 4.
A=-1
9=4a+13
- 13
9=4a
-13
-4=4a
Divide 4 and -4
Which is -1

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