Exercise 49

Choose the correct inequality or equal sign to make the relation true.

  1. Let \(x\) and \(y\) be integers, such that \(x \lt y\text{.}\)

    Then \(x-y\)

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    • >

    • =

    \(y-x\text{.}\)

  2. Let \(x\) and \(y\) be integers, such that \(1 \lt x \lt y \text{.}\)

    Then \(xy\)

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    • >

    • =

    \(x + y\text{.}\)

  3. Let \(x\) and \(y\) be rational numbers, such that \(0 \lt x \lt y \lt 1\text{.}\)

    Then \(xy\)

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    \(x + y\text{.}\)

  4. Let \(x\) and \(y\) be integers, such that \(x \lt y\text{.}\)

    Then \(x + 2y\)

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    • =

    \(2x + y\text{.}\)

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