Solve -
3(n-5)=21

Dear student,
Here is the solution of your asked query:
$$\begin{gathered} 3\left(\mathrm{n}-5\right)=21 \\ \Rightarrow \mathrm{n}-5=\frac{21}{3} \\ \Rightarrow \mathrm{n}-5=7 \\ \Rightarrow \mathrm{n}=7+5 \\ \Rightarrow \mathrm{n}=12 \end{gathered}$$
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