Explanation

Let's denote the number as x. According to the problem:

133 added to a number (x) is equal to 75 more than 4 times the number (4x + 75)

The correct equation is:

133 + x = 4x + 75

Now, let's solve for x:

133 - 75 = 4x - x

58 = 3x

x = 58 / 3

x = 19.33

The correct equation is indeed:

133 + x = 4x + 75