Question

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.

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