Pre-Algerbra

Need answers to the following,
1. 1/2-2/3
2. -1/6-1/2
3. -1/2divided by 2 1/2

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  1. When you add or subtract fractions, you need the common denominator.

    1.
    1/2 = 3/6
    2/3 = 4/6
    3/6 - 4/6 = -1/6

    2.
    You try this one.

    3.
    -(1/2) / -(5/2)
    -(1/2) * -(2/5) = 2/10 = 1/5

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