Respuesta :

meredith48034

Answer:

Step-by-step explanation:

7. x + 78 = 70

x = -8

corresponding angles

8. 13x = 5 + 12x

   x = 5

  alt. ext. angles

9. 56x - 2 = 110

   56x = 112

    x = 2

 vertical angles

10. 26x + 5 = 135

    26x = 130

       x = 5

  alt. int. angles

11. x + 110 = 100

   x = -10

vertical angles

12. 12x + 4 = 13x - 4

  -x = -8

   x = 8

alt. ext. angles

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