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Im so confused with this question 21≥3(a-7)+9
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2 votes
Im so confused with this question 21≥3(a-7)+9

User Charlie Guo
by
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2 Answers

7 votes

Answer:

a ≥11

Explanation:


21 \geqslant 3a - 21 + 9 \\ 21 \geqslant 3a - 12 \\ 21 + 12 \geqslant 3a - 12 + 12 \\ 33 \geqslant 3a \\ 3a \leqslant 33 \\ a \geqslant 11

User OARP
by
3.7k points
5 votes

Answer:

I got you!

a ≤ 11

For more info, look at the steps in the attached image!

Explanation:

Im so confused with this question 21≥3(a-7)+9-example-1
User Douglas Su
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