Respuesta :

Answer:

k = - 5

Step-by-step explanation:

Given

240 = 8(- 5 - 7k) ← divide both sides by the multiplier 8

30 = - 5 - 7k ( add 5 to both sides )

35 = - 7k ( divide both sides by - 7 )

- 5 = k

TheBlueFox

240 = 8 (-5 - 7k)

First, we can distribute.

240 = -40 - 56k

+40        +40                ← add 40 on both sides.

280 = -56k

-56          -56          ← divide both sides by -56

   -5 = k

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