Respuesta :

mhanifa

Answer:

  • x = 41

Step-by-step explanation:

If l and m are parallel, the given two angles are congruent as alternate interior angles:

  • 3x - 43 = 80

Solve for x:

  • 3x = 80 + 43
  • 3x = 123
  • x = 123/3
  • x = 41

Alternate interior angles are equal

  • 3x-43=80
  • 3x=80+43
  • 3x=123
  • x=41