Answer:
x=20
Step-by-step explanation:
<2 = <3 when the lines are parallel
3x-10 = x+30
Subtract x from each side
3x-10 -x = x+30-x
2x-10 = 30
Add 10 to each side
2x-10 +10 = 30+10
2x = 40
Divide by 2
2x/2= 40/2
x =20
