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

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The equation is $\"\"$

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According to Subtraction Property of equality:If a = b then, a - b = b - a.

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

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

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$\"\"$ (Additive identity proparty:0-y=-y) $\"\"$

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According to Subtraction Property of equality:

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If a = b then, a - b = b - a.

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

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

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$\"\"$ (Distributive property: $\"\"$ )

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

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$\"\"$ (Divide each side by (x-w))

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$\"\"$ (Cancel common terms) $\"\"$

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Verify:

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To check the solution, substitute $\"\"$ in original equation.

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$\"\"$

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$\"\"$ (Cancel common terms)

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

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

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Compare the values, the equation is true.

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$\"\"$

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The value of a is $\"\"$ .

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