How do you solve the given equation x – 3 = –9?

Hint: We start solving the problem by adding both sides of the given equation with 3. We then make the necessary calculations including addition and subtraction operations to get the required value of x which is the required solution of the given equation in the problem.

Complete step-by-step answer:
According to the problem, we are asked to solve the given equation x – 3 = –9.
We have given the equation x – 3 = –9 ---(1).
Let us add both sides of the equation (1) with 3.
So, we get x – 3 + 3 = –9 + 3.
$\Rightarrow $ x = –6.
So, we have found the solution (the required value of x) of the given equation x – 3 = –9 as x = –6.
$\therefore $ The solution (the required value of x) of the given equation x – 3 = –9 is x = –6.

Note: Whenever we get this type of problems, we try to find the value of x which satisfies the given equation in the problem by making the calculations involving addition, multiplication, subtraction and division operations. We should not make calculation mistakes while solving this type of problem. We can also find the values of the square and cube of the obtained answer from the given problem. Similarly, we can expect problems to find the solution of the given equation $7x-3=5-x$.