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andriy [413]
3 years ago
12

21 is greater than or equal to 3(a-7) +9

Mathematics
1 answer:
likoan [24]3 years ago
4 0
21≥<span>3(a-7) +9
first, just solve it like a normal equation
Distribute
21</span>≥3a-21+9
<span>Combine numbers
21</span>≥3a-12
<span>Solve like equation
33</span>≥3a
11≥a
<span>"a" has to be less than or equal to 11 for the inequality to be true

</span>
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