133+х +57=218

To solve the equation \( 133 + x + 57 = 218 \), we can first combine the constants on the left side:

1. Combine \( 133 \) and \( 57 \): \[ 133 + 57 = 190 \]

2. Substitute back into the equation: \[ 190 + x = 218 \]

3. Now, isolate \( x \) by subtracting \( 190 \) from both sides: \[ x = 218 - 190 \]

4. Calculate the right side: \[ x = 28 \]

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