Answer:
1) 5x - 4 ≥ 12
5x ≥ 12 + 4
5x ≥ 16
x ≥ 16/5
2) 12x + 5 ≤ -4
12x ≤ -4 - 5
12x ≤ -9
x ≤ -9/12
Explanation:
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