What minus 51 equals 87?

Here we will show you how to calculate "What minus 51 equals 87?" using simple algebra.
For the sentence, "What minus 51 equals 87?", we can make it into an algebra equation as follows:
X - 51 = 87
Then, we solve for X. To solve for X, add 51 to both sides:
X - 51 + 51 = 87 + 51
Which makes:
X = 138
Thus, the answer to "What minus 51 equals 87?" is 138 as illustrated below:
138 - 51 = 87