Colin was given the inequality x-4.2>5.5 to solve. He said the solution set was x> 1.3. describe colins error and give the correct solution set in your explanation.

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Mathematics

29 December, 14:14

Colin was given the inequality x-4.2>5.5 to solve. He said the solution set was x> 1.3. describe colins error and give the correct solution set in your explanation.

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Diamond Stuart · Answer 1

x-4.2>5.5 = 9.7 Collin forgot to change his negative to a positive when adding + 4.2 + 4.2 the inequality. He was supposed to change the negative to positive add 4.2 to 5.5 which would give him a positive 9.2