[
  "First simplify the left side: 4/5 + 7 = 0.8 + 7 = 7.8, or as a fraction: 39/5.",
  "Set up the equation: 39/5 = ?/10 + 5. Subtract 5 from both sides: 39/5 - 25/5 = 14/5 = ?/10.",
  "Multiply both sides by 10: ? = (14/5)*10 = 28."
]