Find the values of x, y, and z for which ABCD must be a parallelogram. I tried this one but i don't think i am correct on it

A. x = 50, y = 130, z = 130

Step-by-step explanation:

50 and z are adjacent angles,

Sum of adjacent angles = 180,

50 + z = 180

z = 180 - 50

z = 130

z and x are adjacent angles,

Sum of adjacent angles = 180,

x + z = 180

130 + x = 180

x = 180 - 130

x = 50

z and y are opposite angles,

Opposite angles are equal in a parallelogram,

z = y = 130

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^