What minus 9 equals 40?

Here we will show you how to calculate "What minus 9 equals 40?" using simple algebra.
For the sentence, "What minus 9 equals 40?", we can make it into an algebra equation as follows:
X - 9 = 40
Then, we solve for X. To solve for X, add 9 to both sides:
X - 9 + 9 = 40 + 9
Which makes:
X = 49
Thus, the answer to "What minus 9 equals 40?" is 49 as illustrated below:
49 - 9 = 40