Write the word sentence as an inequality. Then solve the inequality.
The product of $- 3$ and a number p is greater than $21$

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Solution

Given : The product of $- 3$ and a number $p$ is greater than $21$
According to the given sentence the inequality is:
$\Rightarrow - 3 p > 21$
$\Rightarrow \frac{- 3 p}{- 3} < \frac{21}{- 3}$ [ Divide both sides by $- 3$ and reverse the sign of inequality ]
$∴ p < - 7$
Hence, the required solution of an inequality is $p < - 7$

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