d-4/5=12

Solve for d:

• Start: d − 4/5 = 12
• Add 4/5 to both sides: d = 12 + 4/5
• Combine: 12 = 60/5, so d = (60/5) + (4/5) = 64/5
• In other forms: d = 64/5 = 12 4/5 = 12.8

Check: 64/5 − 4/5 = 60/5 = 12, confirmed.