Question

3 (n-5)=21 solve the equation ​

Answer 1

Step-by-step explanation:

3 ( n - 5 ) = 21

3n - 15 = 21

3n = 21 + 15

3n = 36

n = 36/3

n = 12

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Answer 2

Answer:

=> The value of n is 12.

Step-by-step explanation:

Given that:-

$3 (n-5)=21$

To find:- The value of the expression,

To solve this expression, we have to use the transposition method:  

As we have,

=> $3 (n-5)=21$

Distributing the terms, we get

=> $3 n-15=21$

Add both sides by $15$, we get

=> $3 n-15+15=21+15$

Simplifying it further, we get

=> $3 n=21+15$

Add the numbers, we get

=> $3n = 36$

Divide both sides by $3$,

=> n = 12

Hence, the required solution is 12.