To find the value of y, we can use the fact that opposite sides of a parallelogram are equal in length. Therefore, we can set up the following equations:
10 = 10 + 2x
2y + 4 = 18
Simplifying the first equation, we get:
2x = 0
Solving for x, we get:
x = 0
Substituting x = 0 into the second equation, we get:
2y + 4 = 18
Simplifying this equation, we get:
2y = 14
Dividing both sides by 2, we get:
y = 7
Therefore, the value of y is 7.