Answer:
x=4 that is Option 2 is correct.
Step-by-step explanation:
The given figure is rectangle and since the opposite sides of rectangle are equal
hence, 18=10+2x
After simplification so as to get the value of x we get:
18-10 =2x
8=2x
After further simplification we get:
x=4
Therefore, option 2 is correct.