Is the point of a first degree equation in general form to prove whether or not a value is true or false?

or to solve for X ?





don't understand the purpose of this type of equation , for example :


5(x+2) - 15 = 0Is the point of a first degree equation in general form to prove whether or not a value is true or false?
Typically, you'll want to simplify the expression to solve for the variable.





In this case:


5x + 10 - 15 = 0


5x = 5


x = 1