Stepwise
Start practisingPractise

JAMB 2003 · UME · Q18

Find the range of values of xx satisfying the inequalities 5+x≤85 + x \le 8 and 13+x≥713 + x \ge 7.

Worked solution (try it first)
  1. Subtract 5 from both sides of the first: x≤3x \le 3.
  2. Subtract 13 from both sides of the second: x≥7−13x \ge 7 - 13, so x≥−6x \ge -6.
  3. Both must hold: −6≤x≤3-6 \le x \le 3, option A.

Report a problem with this question