What minus 78 equals 87?

Here we will show you how to calculate "What minus 78 equals 87?" using simple algebra.
For the sentence, "What minus 78 equals 87?", we can make it into an algebra equation as follows:
X - 78 = 87
Then, we solve for X. To solve for X, add 78 to both sides:
X - 78 + 78 = 87 + 78
Which makes:
X = 165
Thus, the answer to "What minus 78 equals 87?" is 165 as illustrated below:
165 - 78 = 87