Answer:
Typically when solving an equation with one variable, your objective is to isolate the variable on one side of the equation. This can be done adding/subtracting number to cancel them out on one side. You can also multiply/divide coefficients in order to isolate a variable.
Example:
Add -4 to both sides to isolate the variable.
Simplify.
Divide both sides by 2 to isolate the variable on one side.
Explanation: