Question

3(n+5)=21 by systematic method​

Answer 1

Step-by-step explanation:

3×n+3×5 = 21

3n+15 = 21

3n = 21-15

3n = 6

n = 6÷3

n = 2

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Answer 2

$\sf\bigstar\underline{\underline\pink{Solution :-}}$

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↦$\tt{3\:(n+5) \:=\: 21}$

↦$\tt{3n\: +\: 15\: =\: 21}$

↦$\tt{3n\: = \:21\: -\: 15}$

↦$\tt{3n\: = \:6}$

↦$\tt{n \:=}$$\tt\frac{6}{3}$

↦$\tt{n\:=\:2}$ $\tt\blue{Ans}$

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