Question

If the replacement set = {- 6,. - 3, 0, 3, 6, 9}; find the truth set of the following :  2x - 1 > 9

Answer 1

2x – 1 > 9

⇒ 2x – 1 + 1 > 9 + 1 (Adding 1)

⇒ 2x > 10

⇒ x > 5 (Dividing by 2)

⇒ x > 5

Required answer = {6, 9}