\"\"

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Solve the system of equation using Substitution Method:

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The equations are

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\"\"                       (Equation(1)

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\"\"                   (Equation(2)

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Solve the first equation for r in terms of s.

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\"\"      (Subtract 2r from each side).

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\"\"      (Apply Commutative property: \"\")

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

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\"\"                       (Apply Additive identity property: \"\")

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\"\"

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Substitute  \"\" in Equation (2).

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 \"\"

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\"\"  (Apply Distributive property: \"\")

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\"\"          (Multiply: \"\")

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\"\"               (Multiply: \"\")

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\"\"               (Apply Commutative property: \"\")

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

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\"\"    (Add 22 to each side)

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

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\"\"                      (Apply Additive identity property: \"\")

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

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\"\"

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\"\"                          (Divide each side by 10)

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\"\"                                  (Cancel common terms)

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

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\"\"

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Substitute \"\" in equation \"\".

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\"\"

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

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

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 The solution is\"\".