$\"\"$ $\"\"$

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The equation is “ $\"\"$ ”

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According to addition property of equalities: $\"\"$ then $\"\"$ .

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$\"\"$ (Add 3 to each side)

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$\"\"$ (Additive inverse property: $\"\"$ )

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$\"\"$ (Additive inverse property: $\"\"$ )

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$\"\"$ (Add: $\"\"$ ) $\"\"$

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The value of x is 13.

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