25x-1=9

To solve the equation \( 25x - 1 = 9 \), follow these steps:

1. Add 1 to both sides: \[ 25x - 1 + 1 = 9 + 1 \] \[ 25x = 10 \]

2. Divide both sides by 25: \[ x = \frac{10}{25} \] \[ x = \frac{2}{5} \]

Thus, the solution is: \[ x = \frac{2}{5} \]