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29-08-2017
Mathematics

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An equation that is satisfied for every value of the variable for which both sides are defined

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06-09-2017

An equation that is satisfied for every value of the variable for which both sides are defined is called an identity.

For example:
Given the equation
3x + 4 = x + 2(x + 2)

Notice that for any value of x you use, the equation is true.

Thus, this type of equation is called an identity.

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