324+x=851-263

To solve the equation \( 324 + x = 851 - 263 \), first simplify the right side:

\[ 851 - 263 = 588 \]

Now the equation becomes:

\[ 324 + x = 588 \]

Next, isolate \( x \) by subtracting 324 from both sides:

\[ x = 588 - 324 \]

Calculating the right side:

\[ 588 - 324 = 264 \]

Thus, the solution is:

\[ x = 264 \]