Monday, 4 September 2023

INEQUALITIES K1

 

If 12x + 8 ≥ 26 + 3x ≥ 9x – 10; find x.

 

Solution

 

12x + 8 ≥ 26 + 3x and  26 + 3x ≥ 9x - 10

 

12x – 3x ≤ 26 - 8 and  26 +10 ≤ 9x - 3x

 

9x ≤ 18 and  36 ≤ 6x

 

9x ≤ 18  and  36 ≤ 6x

9      9            6      6

 

x ≤ 2 and   6 ≤ x

 

x ≤ 2 and  x  ≥  6

 

TRY THIS…………….

 

 

If 12x + 34 ≥ 7 + 3x ≥ 9x – 22; find x


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