599. 75 см 2 мм - 5 мм

To solve this problem, we need to subtract the lengths given. First, we subtract the millimeters: 2 mm - 5 mm. Since we cannot subtract 5 from 2, we borrow 1 cm (which is 10 mm) from 75 cm. Now we have 75 cm - 1 cm = 74 cm, and 2 mm + 10 mm = 12 mm. Then, we subtract the millimeters: 12 mm - 5 mm = 7 mm. The centimeters remain 74 cm. The total length is 74 cm and 7 mm.