Answer:
y = 3
Step-by-step explanation:
Opposite sides of a parallelogram are the same length, so ...
BC = AD
4y -5 = 2y +1 . . . . substitute the given expressions
2y = 6 . . . . . . . . . . add 5-2y
6/2 = y = 3 . . . . . . divide by the coefficient of y
