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professor190 [17]
3 years ago
8

Solve the inequality please- 21 ≥ 3(a- 7) +9 Thank you so much

Mathematics
1 answer:
Alexeev081 [22]3 years ago
8 0

Answer:

<h2>         a ∈ (-∞, -3></h2>

Step-by-step explanation:

<h3>- 21 ≥ 3(a - 7) + 9</h3><h3>- 21 ≥ 3a - 21 + 9</h3>

  +21         +21

<h3>    0 ≥ 3a + 9 </h3><h3>3a + 9 ≤ 0</h3>

      -9      -9

<h3>3a ≤ - 9</h3>

 ÷3    ÷3

<h3>  a ≤ -3 </h3><h3>a ∈ (-∞, -3></h3>
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