Respuesta :

Answer:

-4

Step-by-step explanation:

8a + 2b + 7c = 4

We want -8a, so multiply the equation by -1

-1 ( 8a + 2b + 7c )= 4*-1

-8a - 2b - 7c = -4

Rearranging the order

-7c - 2b - 8a=-4

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