\"\"\"\"

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The equation is.\"\"

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Subtraction property of equality: If a = b then a - c = b - c
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\ \"\"             (Subtract 4 from both sides)\"\"

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\"\"                    (Substitute:\"\")

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\"\"                             (Subtract: \"\")\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\"

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The value is \"\".

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