What minus 90 equals 21?
Here we will show you how to calculate "What minus 90 equals 21?" using simple algebra.
For the sentence, "What minus 90 equals 21?", we can make it into an algebra equation as follows:
X - 90 = 21
Then, we solve for X. To solve for X, add 90 to both sides:
X - 90 + 90 = 21 + 90
Which makes:
X = 111
Thus, the answer to "What minus 90 equals 21?" is 111 as illustrated below:
111 - 90 = 21