how can x be the subject of the formula?

Answer:
This may not be a good enough answer, but maybe because it is undefined.
Step-by-step explanation:
X is a mathematical term used to show an answer your trying to find or achieve. X is also talked upon as the "unknown variable" to many equations.
Answer:
Step-by-step explanation:
So first of all X sums everything up so its formula can be in anything as 4x but as in 4x it means 4 times x so the answer is :
4x means 4 times X