[
  "Align the decimal points. Subtract each place value column by column.",
  "6.59 - 4.48: 9 hundredths - 8 hundredths = 1 hundredth. 5 tenths - 4 tenths = 1 tenth. 6 ones - 4 ones = 2 ones. Result: 2.11.",
  "6.59 - 4.48 = 2.11. Answer: 2.11."
]