The easiest way to solve an algebra problem is to work out the problem.
The easiest way I've found is to begin by starting with the edge pieces.
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To solve it by coordinate graphs you would take a point from the line and plug in the X and Y value into the equations and or inequalities.
What's your question? To solve an absolute value inequality, knowledge of absolute values and solving inequalities are necessary. Absolute value inequalities can have one or two variables.
You solve inequalities by making it easier for the individuals who have less to overcome their circumstances. For governments, creating social programs will help the less fortunate.
Even if you keep the decimal, later on you will still have to remove it. It is just an easier way to solve the equation.
Talking to somebody is the easiest way to solve problems. You may have to compromise to solve conflicts.