Absolute Value, shown on calculators as abs(x) or |x|, is basically the positive version of a number. Here are some examples:
If you want to solve an equation That has an absolute value in it, You can (and should) seperate your answer to two or more different answers. Heres an example:
lets say we want to solve |x+4|=5. Lets seperate our answer to two different cases:
1. x+4 is bigger than 0, meaning the equation is x+4=5 (x=1)
2. x+4 is smaller than 0, meaning the equation is -x-4=5 (x=-9)
i hope i helped!