Respuesta :

Answer:

k=−5

Step-by-step explanation:

−3(k+7)−5k+4=23

(−3)(k)+(−3)(7)+−5k+4=23(Distribute)

−3k+−21+−5k+4=23

(−3k+−5k)+(−21+4)=23(Combine Like Terms)

−8k+−17=23

−8k−17=23

Step 2: Add 17 to both sides.

−8k−17+17=23+17

−8k=40

Step 3: Divide both sides by -8.

−8k

−8

=

40

−8

k=−5

Answer:

k=−5

 
The answer is k=-5

1 Expand - 3k - 21 - 5k + 4 = 23
2 Simplify - 3k - 21 - 5k + 4 to - 8k - 17 - 8k - 17 = 23
3 Add 17 to both sides - 8k = 23 + 17
4 Simplify 23 + 17 to 40. - 8k = 40
5 Divide both sides by . k = - 40/8
6 Simplify -40/8 to 5.

6 Simplify 40/8 to 5

k = - 5 Done

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