$\"\"$

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The equation is $\"\"$ \ \

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According to multiplication property of equality:

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For any number a, b and c, If a = b then ac = bc.

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

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$\"\"$ (Cancel common terms)

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

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$\"\"$

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

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$\"\"$ (Subtract 17 from both sides)

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

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

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$\"\"$ (Simplify) \ \

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$\"\"$

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Check:

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

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$\"\"$

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

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

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Compare the values, the equation is true.

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$\"\"$

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The value of $\"\"$ .

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