Solve
Solve
⇒
⇒
[Multiply both sides by 30]
⇒
⇒ 3(3x + 20) ≥ 10(x – 6)
⇒ 9x + 60 ≥ 10x - 60
⇒ 9x + 60 – 60 ≥ 10x – 60 – 60 (Rule 1)
⇒ 9x ≥ 10x - 120
⇒ 9x – 10x ≥ 10x – 120 – 10x (Rule 1)
⇒ - x ≥ -120
⇒ x ≤ 120 (Rule 2)
Solution set = (-∞ , 120).
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