Absolute value is the distance a number is from zero on a numberline. Say the absolute value of -5 = 5. Any time you have an absolute value it will always be positive (ALWAYS).
Example: | 2-5 | = 3
Another way to solve an absolute value equation.
| x+12 | = 9 Turn the right side to a negative.
| x+12 | = -9
-12 -12
x = -21
| -21+12 |=9
|-9|=9 Yes
Example: | 2-5 | = 3
Another way to solve an absolute value equation.
| x+12 | = 9 Turn the right side to a negative.
| x+12 | = -9
-12 -12
x = -21
| -21+12 |=9
|-9|=9 Yes