Question

What is the value of x in the equation x + 10 = 13?
O-3
03
0 13
O 23

Answer 1

3

Explanation:

x+10=13

x+10-10=13-10

Simplfiy

x=3

Answer 2

Hi! Your answer is x = 3.

Please see an explanation for a clear and better understanding to your problem.

Any questions about my answer and explanation can be asked through comments! :)

Explanation:

Our goal is to find the value of x. That means what we have to do is to isolate x-term first.

`\huge{x+10=13}`

To isolate a variable means that to make a variable as a subject or also known as leaving a variable alone. To isolate the x-term for this problem, simply subtract both sides by 10 so we can get rid of 10 from the left side.

`\huge{x+10-10=13-10}\\\huge{x+0=3}\\\huge{x=3}`

If you are not sure that the answer is correct or not. We can substitute the value of x in the equation.

`\huge{x+10=13}`

Substitute x = 3 in the equation.

`\huge{3+10=13}\\\huge{13=13}`

The equation is true for x = 3. Hence, we can conclude that x = 3 is the solution to the equation.