The figure is a parallelogram, and in a parallelogram, the lower side and the upper side have the same length. Also, the left side and the right side have the same length. This is shown in the following image:
The red sides are equal, and the blue sides are equal.
Thus, since the blue sides are equal, we can use the following equation to find x:

And since, once we know x, we can know the length of JK, this is the equation that we can use to find JK.
Answer:
7x=3x+14
16.6 times because if there is 3 numbers you simply divide it into 50
P=20 this is because you have to get 2 on each side 7.2/3.6 =2 so 20/10=2 2=2
Y = 8x + 29 is the answer for your question