Tuesday, 31 December 2013

INEQUALITIES A1

2x – 1 ≤ x + 5 ≤ 6x

solution

2x – 1 ≤ x + 5 and  x + 5 ≤ 6x

2x – x ≤ 1+ 5 and  5 ≤ 6x - x

x ≤ 6 and  5 ≤ 5x (divide by 5 both sides)

x ≤ 6 and  1 ≤ x


x ≤ 6 and  x ≥ 1 

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