[
  "Convert 1½ to a decimal (1.5) or keep as a fraction, then align all numbers.",
  "Add: 1.5 + 1.26 + 1.5 = 4.26 m.",
  "4.26 = 4 + 26/100. Simplify 26/100 by dividing numerator and denominator by 2: 13/50. So 4 13/50."
]