Answer:
[tex]\huge\boxed{\sf x = 12 }[/tex]
Step-by-step explanation:
Opposite sides and angles of a parallelogram are equal.
So,
3x - 1 = 35
Add 1 to both sides
3x = 35 + 1
3x = 36
Divide 3 to both sides
x = 36 / 3
x = 12
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807
