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

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The expression is $\"\"$

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Whether the equation is true or not

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$\"\"$

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According to addition property of equality: If a = b then a + c = b + c.

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$\"\"$ (Add 4y to each side)

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

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

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According to subtraction property of equality: If a = b then a - c = b – c.

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$\"\"$ (Subtract 2 from each side)

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$\"\"$ (Commutative property: $\"\"$ )

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

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

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

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$\"\"$ (Divide each side by 4)

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$\"\"$ (Cancel common terms)

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$\"\"$ (Divide: $\"\"$ ) $\"\"$

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The equation is true.