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It really depends on the type of equation, but in the simpler cases - those that you are likely to encounter in high school algebra - you will usually need to replace the purported solution into the original equation, then simplify the equation as appropriate. If this results in a true statement (for example, "5 = 5"), then the solution is correct; if you get a false statement (for example, "1 = 0"), then the purported solution is not correct.

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first you have to solve the equation; then to check plug in the solved values to the equation to make sure the left side equals the right side.

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9y ago
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Q: How do you check an equation?
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