X-3=4

To solve the equation \( x - 3 = 4 \), you need to isolate \( x \).

1. Add 3 to both sides of the equation:

   \[ x - 3 + 3 = 4 + 3 \]

2. This simplifies to:

   \[ x = 7 \]

So the solution is \( x = 7 \).