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Sagot :
[tex]\bold{3(n - 1) < 21 }\\\\\bold{ 3n - 3 < 21 }\\\\\bold{ 3n < 21 + 3} \\\\\bold{ 3n < 24} \\\\\bold{ n < \cancel\frac{24}{3}} \\\\ \bold{n < 8}[/tex]
hope helpful~
Hello.
The first step is to use the Distributive Property and distribute 3:
3(n-1)<21
3n-3<21
Now, add 3 to both sides:
3n-3+3<21+3
3n<24
Divide both sides by 3:
n<8
Therefore, the answer is
n<8
I hope it helps.
Have a nice day.
[tex]\boxed{imperturbability}[/tex]
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