10т-7ц 35кг-9ц 78кг

To simplify the expression "10т - 7ц + 35кг - 9ц + 78кг", we first need to convert all units to either tons (т), centners (ц), or kilograms (кг) for easier calculation. Here are the conversion factors you may need: 1 ton (т) = 100 centners (ц) 1 centner (ц) = 100 kilograms (кг) Let's convert everything to kilograms (кг): 1. **10 tons (т)** = 10 × 1000 kg = 10,000 kg 2. **7 centners (ц)** = 7 × 100 kg = 700 kg 3. **35 kilograms (кг)** = 35 kg (already in kg) 4. **9 centners (ц)** = 9 × 100 kg = 900 kg 5. **78 kilograms (кг)** = 78 kg (already in kg) Now we can rewrite the expression using kilograms: \[ 10,000 \text{ kg} - 700 \text{ kg} + 35 \text{ kg} - 900 \text{ kg} + 78 \text{ kg} \] Now, let's perform the calculations step by step. 1. \( 10,000 \text{ kg} - 700 \text{ kg} = 9,300 \text{ kg} \) 2. \( 9,300 \text{ kg} + 35 \text{ kg} = 9,335 \text{ kg} \) 3. \( 9,335 \text{ kg} - 900 \text{ kg} = 8,435 \text{ kg} \) 4. \( 8,435 \text{ kg} + 78 \text{ kg} = 8,513 \text{ kg} \) The final result of the expression \( 10т - 7ц + 35кг - 9ц + 78кг \) is: **8,513 kg**.