Respuesta :

Answer:

3.5

Step-by-step explanation:

Please share the instructions next time.  I will assume that you want to solve -4.5 = a - 8 for a.  If that's the case, add 8 to both sides to isolate a:

8 - 4.5 = a, or

a = 3.5

Answer:

3.5

Step-by-step explanation:

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