Callie solved this one-variable equation. When she was done, she tried to verify her answer, but found that it was wrong. Can you find her mistake? 1 2 (4k + 8) = 10 1. 2k + 16 = 10 2. 2k = - 6 3. k = - 3

Question

Mathematics

Darren Werner

9 March, 15:11

Callie solved this one-variable equation. When she was done, she tried to verify her answer, but found that it was wrong. Can you find her mistake? 1 2 (4k + 8) = 10 1. 2k + 16 = 10 2. 2k = - 6 3. k = - 3

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Answers (1)

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Fiona Pitts · Answer 1

2 (4k+8) = 10

8k+16=10 (she said 2k instead of 8k)

To continue solving, subtract 16 from both sides. That would give you 8k = - 6. Then divide both sides by 8, and get - 6/8 which equals - 3/4.