HEYO HOW DO I GET YOUR GUY’S ATTENTION TO ANSWER MY QUESTIONS! I HAVE SOME QUESTIONS:

NUMBER 1: Why do you solve for a specific variable?
NUMBER 2: Why would you want to solve for a specific variable variable?
NUMBER 3: Show an example of solving for a specific variable.

(I posted this same question like 4 times lol)
PLEASE ANSWER

1. variable by itself with a coefficient of 1 on one side of the equation and all the other variables and constants on the other side.

2.Because solving an equation is to find its solutions, which are the values (numbers, functions, sets, etc.) that fulfill the condition stated by the equation, consisting generally of two expressions related by an equals sign. When seeking a solution, one or more variables are designated as unknowns.

Step-by-step explanation:

3x =4xyz - 12y

+12           +12

3x + 12y

4xy

3x + 12y

=z

4xy