What minus 4 equals 9?

Here we will show you how to calculate "What minus 4 equals 9?" using simple algebra.
For the sentence, "What minus 4 equals 9?", we can make it into an algebra equation as follows:
X - 4 = 9
Then, we solve for X. To solve for X, add 4 to both sides:
X - 4 + 4 = 9 + 4
Which makes:
X = 13
Thus, the answer to "What minus 4 equals 9?" is 13 as illustrated below:
13 - 4 = 9