If 10x – 3 ≤ x + 15 ≤ 6x ; find x

__Solution__
10x – 3 ≤ x + 15 and x + 15 ≤ 6x

10x – x ≤ 3+ 15 and 15 ≤ 6x - x

9x ≤
18(divide
by 9 both sides) and 15 ≤ 5x (divide by 5 both sides)

x ≤ 2 and 3 ≤ x

x ≤ 2 and x ≥ 3

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If 10x – 3 ≤ x + 36 ≤ 13x ; find x