42-17-x=8

To solve the equation \( 42 - 17 - x = 8 \), first simplify the left side:

1. Combine the constants: \[ 42 - 17 = 25 \] So the equation becomes: \[ 25 - x = 8 \]

2. Next, isolate \( x \) by subtracting 25 from both sides: \[ -x = 8 - 25 \] \[ -x = -17 \]

3. Finally, multiply both sides by -1 to solve for \( x \): \[ x = 17 \]

Thus, the solution to the equation is \( x = 17 \).