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- 3 [ 9 x + 20 ] ≥ 15 x - 20
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- 3 [ 9 x + 20 ] ≥ 15 x - 20

User Danielp
by
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1 Answer

1 vote

Answer:

x ≤ - 20/21

Explanation:

- 27x - 60 ≥ 15x - 20

- 27x - 60 - 15x ≥ - 20

- 27x - 15x ≥ - 20 + 60

- 42x ≥ - 20 + 60

- 42x ≥ 40

User Rafael Monteiro
by
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