To solve this problem we must know that when any two lines intersect , a pair of opposite angles from the figure Will be equal
so that means that
[tex]4x + 20 = 3x + 55[/tex]
we can subtract twenty from each side
[tex]4x + (20 - 20) = 3x + (55 - 20)[/tex]
[tex]4x = 3x + 35[/tex]
now we can subtract like terms
[tex]4x - 3x = (3x - 3x) + 35[/tex]
so we can get the final answer as
[tex]1x = 35[/tex]
