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

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The equation is $\"\"$ .

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According to subtraction property of equality: if $\"\"$ , then $\"\"$ .

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$\"\"$ (Subtract 5 on both sides)

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

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$\"\"$ (Subtract: $\"\"$ ) $\"\"$

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According to subtraction property of equality: if $\"\"$ , then $\"\"$ .

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$\"\"$ (Subtract 3f from each side)

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$\"\"$ (Apply Commutative property: a + b = b + a)

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

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$\"\"$ (Subtract: $\"\"$ ) $\"\"$

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Check:

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$\"\"$ (Replace n in the equation with $\"\"$ )

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$\"\"$ (Multiply: $\"\"$ )

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

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$\"\"$ (Subtract: $\"\"$ )

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The equation is true. $\"\"$

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The solution is $\"\"$ .