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8-9.
  1. Simplify each expression. Homework Help ✎

    1. +

    2. +(−)

    3. ·

    4. −1·

Find a common denominator and simplify.

Remember that adding a negative number is essentially subtraction.

Multiply the numerators together and the denominators together.

Turning the first fraction into a fraction greater than one may prove to be more helpful.