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# How do you know when an equation has no solution?

Wiki User

2015-08-13 01:22:20

when you're really good in that kind of equation, but cannot, no matter what u do, CANNOT figure it out! when you look it up and can't find the answer in the back of the book. It depends on what kind of problem it is.

Wiki User

2010-03-28 20:38:00
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## Which of the following best describes the purpose of advertising

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Wiki User

2015-08-13 01:43:17

By solving the equation. If you get some contradictory equation, the original equation has no solution, assuming you did everything correctly. For example, if you solve:x + 3 = x + 2

by subtracting x on both sides, you get:

3 = 2

which is always false (regardless of the value of "x").

Wiki User

2014-08-28 17:24:48

When an equation is based on false assumptions, you know that it has not solution. At other times, you may be able to tell through trying to solve the equation and constantly failing.