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By moving all other values to one side and setting it equal to X. For instance, x-12=24. To find the "x" value, add 12 to both sides of the equation which will result in x=36. We know that x=36 is true because when we "plug-in" or "substitute" every "x" in the original equation with the value "36", we should get matatically true statements. For instance 36-12=24 is a true statement.

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13y ago

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