To solve this equation, we can start by writing it as:

x - 0.1x = 27

Combining like terms, we have:

0.9x = 27

Now, we can solve for x by dividing both sides of the equation by 0.9:

x = 27 / 0.9

Simplifying the right side, we get:

x = 30

Therefore, the value of x is 30.