Question

Which of the following is not a way to represent the solution of the inequality 5(x + 2) greater than or equal to 7x + 2(x − 1)?

Answer 1

x ≤ 3

Explanation:

Answer 2

x ≤ 3

Explanation:

The best way to represent an inequality is simplifying it in the simplest way possible.

5(x + 2) ≥ 7x + 2(x − 1)

5x + 10 ≥ 7x + 2x - 2

5x + 10 ≥ 9x - 2

5x - 9x ≥ -2 - 10

-4x ≥ -12

Dividing by -4 on both sides,

-4x ≥ -12

x ≤ 3 ⇒ This is the best way to represent the solution of 5(x + 2) ≥ 7x + 2(x − 1).