drea1120 drea1120

27-05-2020
Mathematics

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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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TheLazyNobita TheLazyNobita

27-05-2020

Answer:

Step 4 contains his mistake . Because while changing the signs , one has to also reverse the inequality sign

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