Does anyone know this?

Answer:
10
Step-by-step explanation:
In a parallelogram, diagonal are equal.
In this diagram, DF and GE are diagonals.
Diagonal bisect each at H.
So,
DH = FH
GH = HE
Given,
DH = 4x - 2
FH = x + 28
Since,
DH = FH
Hence,
4x - 2 = x + 28
4x - x = 28 + 2
3x = 30
x = 30 / 3
x = 10
Therefore,
The value of x is 10.