O. "Seven less than a number, divided by 5, is -2 ."
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To solve the equation, let's represent the unknown number as \( x \). The statement translates into the equation: \( \frac{x - 7}{5} = -2 \). To clear the fraction, multiply both sides by 5, giving us \( x - 7 = -10 \). Finally, adding 7 to both sides leads to \( x = -3 \). So, the number you're looking for is -3! It's often helpful to double-check your solution by substituting back into the original condition. Plugging \( -3 \) back into the equation yields: \( \frac{-3 - 7}{5} = \frac{-10}{5} = -2 \). Checks out! Remember, balancing equations is key to mastering algebra.