To solve the equation \( 15 \times 34 - 31 = -6 \), we first need to calculate \( 15 \times 34 \).
Calculating that: \[ 15 \times 34 = 510 \]
Now, we subtract 31: \[ 510 - 31 = 479 \]
Now we see if this equals -6: \[ 479 \neq -6 \]
It seems like you are looking for the correct answer from the multiple-choice responses (625, 125, 25, 5), but none of these values satisfy the equation \( 15 \times 34 - 31 = -6 \).
Please check the original equation or the context of the options. If you're looking to solve something different, please clarify.