Question

3(n-5)= -21 solve the equation ​

Answer 1

Answer:

Opening the brackets

3n - 3*5 = -21

3n -15 = -21

3n = -21 + 15

3n = -6

n = -6/ 3

n = -2

Answer 2

Answer:

=> n = -2

Step-by-step explanation:

Given that:-

$3(n-5)= -21$

To find:- The value of the expression:

Here we will use the transposition method.

We have to follow these steps:-

( i ) First of all, we have to identify the variables and the constants.

( ii ) Get the variable to one side of the equation. Maintain equation balance while calculating.

( iii ) Then solve the expression of both sides by using various mathematical operations. Simplify both sides.

As we have,

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

Now, distribute the terms -

=> $3n-5= -21$

Add both sides by $5$, we get

=> $3n-5+5= -21+5$

=> $3n=-6$

Divide $3$ on both sides, we get

=> $n = -2$

Hence, the required solution is -2.