Question

I am so confused on this question please help!
Justify the first step that David took in verifying that x = 5 is a solution for the equation
8x – 13 = 2x + 17.

Answer 1

To check a possible solution, plug in the solution to the variable and check to see if what you have left after you simplify is true.

Answer 2

For example, if you plugged in your solution and simplified your equation to 1=1 or -20=-20 or anything else that is true, your solution checks out.

Answer 3

If you simplify the equation down to something that is not true, the solution does not check. For example 0=1 or anything else that is not true.

Answer 4

But what I am explaining is the whole process. Do you have any information about what David's first step is?