How you check your answer depends heavily on what method you use to arrive at your answer.If you isolated a variable, test your conclusion in the original equation, you should have a true statement.If you drew a graph to locate the intersection(s) of a system, try the coordinates that you find in the component equations of the system, they should all return true. If even one equation is not satisfied by your result, it's not right.In general, this sort of thinking is how your going to find confidence in your answers and ability to solve problems. Think of the problem you solve in different ways, if your know that A*B=C, you can be certain that C/B=A.Good luck.
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