\"\"\"\"

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The equation is \"\".

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

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\"\"

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Apply commutative Property of equality: a + b = b + a.

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\"\" \ \

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\"\"                            (Apply additive inverse property: \"\")\"\"

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To subtract the fractions denominators must be equal.

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Find the least common denominator (LCD).

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Multiples of 3: 3,6,9,12,15,18,21.........

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Multiples of 9: 9,18,27,36,45.........

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The least common multiple of 3 and 9 is 9.

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Rewrite each fraction with a common denominator of 9.

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\"\"

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\"\"

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\"\"                               (LCM is 9)

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

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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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\"\"                  (\"\")

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\"\"                    (Lcm is 9)

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

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Compare the values, the equation is true.

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\"\"

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The value of r is \"\".