INEQUALITIES 2

If 10x + 8 ≥ 7 + 3x ≥ 9x – 13; find x

Solution

10x + 8 ≥ 7 + 3x and  7 + 3x ≥ 9x - 13

10x – 3x ≤ 7 - 8 and  7 +13 ≤ 9x - 3x

7x ≤ 1 and  20 ≤ 6x

7x ≤ 1  and  20 ≤ 6x

7       7         6      6

x ≤ ¹/7 and  ¹⁰/3 ≤ x

x ≤ ¹/7 and  x  ≥ ¹⁰/3

TRY THIS…………….

If 14x + 8 ≥ 7 + 3x ≥ 11x – 20; find x