Respuesta :

Answer:

(4x+1)= 81

Step-by-step explanation:

4x+1= 81

4x= 81 - 1

4x= 80

x= 80/4

x= 20

Answer:

4x+1=81(vertically opposite angles)

x=20 degrees

Step by step explanation:

4x+1=81

4x   =81-1

  4x=80

     x=20