To solve for \( X \) in the equation \( X - 66.8 = -53.1 \), we can isolate \( X \) by adding \( 66.8 \) to both sides of the equation.
The steps are as follows:
-
Start with the equation: \[ X - 66.8 = -53.1 \]
-
Add \( 66.8 \) to both sides: \[ X - 66.8 + 66.8 = -53.1 + 66.8 \]
-
This simplifies to: \[ X = -53.1 + 66.8 \]
-
Now, calculate the right side: \[ -53.1 + 66.8 = 13.7 \]
So, the value of \( X \) is \( 13.7 \).
Putting this in the form of your requested equation: \[ -53.1 + 66.8 = 13.7 \]
Thus, if you're looking for what would add to \(-53.1\) to get to \(X\), it would be \(66.8\).