Step-by-step Answer
PAGE: 110SET: ExercisesPROBLEM: 43
Please look in your text book for this problem Statement

The expression is .

According to addition property of equality: Add to each side.

    (Apply commutative property of addition: )

                (Apply additive inverse property: )

                       (Apply additive identity property: )

                             (Add: )             (Add 10 to each side)

                      (Apply additive inverse property: )

                             (Apply additive identity property: )

                                   (Add: )

According to division property of equality: Divide each side by 11.

                                     (Cancel common terms)


To check the solution, substitute in original equation.

                 (Multiply: )

                   (Subtract: )

                         (Subtract: )

Compare the values, the equation is true.

The value of .


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