Answer:
My own answer to your question is x=10
Prime numbers have only 2 factors 1 and its number for example:
2, 3, 5, 7, 11, 13, 17, 19, 23
Like this 1*2. Or 3*1
Composite numbers have more than two factors for example :
0, 4, 6, 8, 9, 10, 12, 14 15, 16..
For example 0 has many factors
0 times 3 0times 4
It is close to 200 because 150 or above would be rounded to 200. Below 150 would be 100


Simplification

Subtract sides 2

Simplification

Subtract sides -12x

Simplification

Divided sides by -6


It is must be in the box buddy.
And we're done...♥️♥️♥️♥️♥️