\"\"

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The given equation is \"\"

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\"\"             (Using distributive property: a (b+c) =ab+ac)

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\"\"                   (Multiply: 7(3) =21; 2(9) =18)

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\"\"                    (Using commutative property: a+b=b+a)

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

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\"\"           (Subtract 4t from each side)

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\"\"            (Using commutative property: a+b=b+a)

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

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\"\"             (Add 21 to each side)

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

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\"\"                                       (Divide each side by 3)

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\"\"                                               (Cancel common terms) \ \

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\"\"

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Verify:

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

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\"\"        (Substitute \"\")

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 \"\"               (Subtract:\"\")

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

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

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Compare the values, the equation is true. The solution is \"\".

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\"\"

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

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