Respuesta :

Answer:

7

Step-by-step explanation:

Distribute: 84 = 8a - 24a - 28

Add like terms: 84 = -16a -28

remove -28: 84 + 28 = -16a -28 + 28 ---> 112= -26a

Isolate variable : 112/-16 = -26a/-16

Answer: 7

marypamis
First, start with the distribution property.
84=8a-24a-28.
next do any possible properties of equality.
84+28=8a-24a
simplify
112=-16a
-112/16=a

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