To solve for the blank, you can rewrite the equation as:
\[ 319 - x = 228 \]
Now, isolate \( x \) by subtracting 228 from both sides:
\[ 319 - 228 = x \]
Calculating this gives:
\[ 91 = x \]
So the answer is:
319 - 91 = 228.
319-____________=228
1 answer