What minus 30 equals 99?

Here we will show you how to calculate "What minus 30 equals 99?" using simple algebra.
For the sentence, "What minus 30 equals 99?", we can make it into an algebra equation as follows:
X - 30 = 99
Then, we solve for X. To solve for X, add 30 to both sides:
X - 30 + 30 = 99 + 30
Which makes:
X = 129
Thus, the answer to "What minus 30 equals 99?" is 129 as illustrated below:
129 - 30 = 99