Question

the solution of the equation 3x+7=-20 is​

Answer 1

Step-by-step explanation:

3x+7 =- 20

3x= -20-7

3x=-27

x=-27/3

x=-9

Answer 2

Answer:

=> The value of x is -9.

Step-by-step explanation:

Given that:-

$3x+7=-20$

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,

=> $3x+7=-20$

Subtract both sides by $7$, we get

=> $3x+7-7=-20-7$

=> $3x=-20-7$

Subtract the numbers,

=> $3x=-27$

Divide both sides by $3$, we get

=> $x = -9$

Hence, the required solution is -9.