[
  "When subtracting a whole number from a decimal, only the ones part changes. The tenths stay the same.",
  "9.5 has 9 ones and 5 tenths. Subtract 7 from the ones: 9 - 7 = 2. The tenths remain 5.",
  "9.5 - 7 = 2.5. Answer: 2.5."
]