Well, there is the order of operations, which depicts the order that you solve an equation with if you have more than one operation. Here is the order;
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One important difference between solving equations and solving inequalities is that when you multiply or divide by a negative number, then the direction of the inequality must be reversed, i.e. "less than" becomes "greater than", and "less than or equal to" becomes "greater than or equal to".Actually, from a purist's sense, the reversal rule also applies with equations. Its just that the reversal of "equals" is still "equals". The same goes for "not equal to".
The method is the same.
The solution is the coordinates of the point where the graphs of the equations intersect.
When solving equations remember that whatever operations are performed on the LHS of the equation must be performed on its RHS to keep the equation in balance.
The order of operations relate to solving multi-step equations because you are following the order of operations just in a backwards way.