Question

Give the steps you will use to separate the variable and then solve the equation
3x+7= -20​

Answer 1

Answer:

x=-9

Step-by-step explanation:

First we have to separate variables and constants

=> 3x= -20-7 ( here when the constants are transferred from LHS to RHS the signs will be changed)

Next subtracting -20 - 7 we will get - 27

=> 3x= -27

Then transferring constant 3 , it becomes-27 divided by 3, note: signs are changed like this - to +, + to - , × to ÷ , ÷ to×.

=> x=-27/3

By dividing we get X is equals to - 9

=> x=-9