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

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The equation is $\"\"$ .

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Apply subtraction property of equality: Subtract $\"\"$ from each side. $\"\"$

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Rearrange the terms using commutative property of addition: $\"\"$ .

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$\"\"$

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

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Combine like terms using distributive property: ab - ac = a( b - c).

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$\"\"$

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

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Apply addition property of equality: Add $\"\"$ to each side.

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$\"\"$ \ \

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

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

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Apply to multiplication property of equality: a=b then a.c = b.c

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$\"\"$ (Multiply each side by negative 63)

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

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

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

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Compare the values, the equation is true. $\"\"$

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