[
  "Align the decimal points. Write 4.3 as 4.30 so both numbers have hundredths. Regroup at tenths and ones when needed.",
  "4.30 - 1.57: 0 - 7 -> regroup to 10. 10 - 7 = 3 hundredths. 2 - 5 -> regroup to 12. 12 - 5 = 7 tenths. 3 - 1 = 2 ones. Result: 2.73.",
  "4.3 - 1.57 = 2.73. Answer: 2.73."
]