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3/4 (8x - 20) + 3 ≤ 2/3 (6x+15)-4
3/4 (*12) (8x-20) + 3 (*12) ≤ 2/3 (*12) (6x+15) - 4(*12)
9 (8x - 20) + 36 ≤ 8 (6x+15) - 48
72x - 180 + 36 ≤ 48x + 120 - 48
72x - 48x ≤ 120 - 48 + 180 - 36
24x ≤ 216
x≤9 (C)
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