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8-61.

Write an equation that represents each diagram below and find the value of the variable.  Homework Help ✎

  1. diagram

     
     

    How are the two lines related?
    How will this help you write an equation?

    Because the two lines are equal, you can write the equation:

    Combine like terms:

    Then solve for x:

  1. diagram

    Use the same method as part (a).