Answer:
x= 20
Step-by-step explanation:
The property used here is "alternative exterior angle". So that means if you want to make them parallel ( A ll B) then we should use the property of alternative exterior angle and thus make them equal. so ....
5x + 20 = 3x + 60
5x - 3x = 60 -20
2x = 40
x= 40/2 = 20
( i think : ) )
