Question 653309
-4k-8(8-5k)
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It's weirsd, but see that -8 outside the ( )?  We have to treat that as a negative 8.
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Let's distribute it:
-4k-8(8-5k)
-4k - 64 + 40k
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The above was the hardest part.  It was -8*8 = -64 then -8*-5k = + 40k
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Now we can combine like terms:
-4k - 64 + 40k
= 35k - 64