Let \( x \) be the amount of money Rita has saved. According to the problem, the skateboard costs $6 less than 3 times the amount she has saved. This can be expressed as:
\[ 3x - 6 = 69 \]
Now, we can solve for \( x \):
- Add 6 to both sides of the equation:
\[ 3x = 69 + 6 \] \[ 3x = 75 \]
- Divide both sides by 3:
\[ x = \frac{75}{3} \] \[ x = 25 \]
Thus, Rita has saved $25.