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

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The equation is $\"\"$ .

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$\"\"$ (Add a to both sides)

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

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$\"\"$ (Additive identityproperty: $\"\"$ )

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$\"\"$ (Multiply each side by z) \ \

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$\"\"$ (Cancel common factors) $\"\"$

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$\"\"$ (Subtract x from both sides)

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

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

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$\"\"$ (Additive identityproperty: $\"\"$ ) $\"\"$

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The solution is $\"\"$ .