Answer:
x= 105
y= 40
Step-by-step explanation:
3y=4y-40 because they are alternate interior
Solve for y.
y=40
4y-40=x+15 because they are vertical angles.
Substitute 40 in for y.
4(40)-40=x+15
Solve.
x=105
y = 40 and x = 105
4y-40 = 3y
y = 40
4(40)-40 = 120
x+15 = 120
x = 105
