Respuesta :

Answer:

x=20

Step-by-step explanation:

For A to be parallel to B, the angles of 5x+20 and 3x+60 must be equal.

5x+20=3x+60

2x=40

x=20

Answer:

x=20

Step-by-step explanation:

5x+20=3x+60

-3x+5x+20=60

2x=40

x=40/2=20