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10 April, 17:00

Carson solved an inequality using the steps shown.

Given: - 2 (n-3) - 5 >9

Step 1: - 2n + 6 - 5> 9

Step 2: - 2n + 1 > 9

Step 3: - 2n > 8

Step 4: n >-4

Which step contains Carson's first mistake?

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Answers (1)
  1. 10 April, 18:10
    0
    Step 4 contains his mistake. Because while changing the signs, one has to also reverse the inequality sign
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