133+x+57=218

To solve the equation \( 133 + x + 57 = 218 \), you can follow these steps:

1. Combine the numbers on the left side: \[ 133 + 57 = 190 \] So the equation now looks like: \[ 190 + x = 218 \]

2. To isolate \( x \), subtract 190 from both sides: \[ x = 218 - 190 \]

3. Calculate \( 218 - 190 \): \[ x = 28 \]

Therefore, the solution is \( x = 28 \).