12т 34кг-3456кг

To solve the equation 12т - 34кг - 3456кг, we need to convert kilograms to tons.

1т (ton) is equal to 1000kg (kilograms).

Therefore, we can rewrite the equation as: 12т - 34кг - 3456кг = 12т - (34кг + 3456кг) = 12т - 3486кг

Next, we need to convert kilograms to tons:

3456кг / 1000 = 3.456т

Now we can substitute the converted value back into the equation: 12т - (34кг + 3456кг) = 12т - (34кг + 3.456т) = 12т - 3.456т - 34кг = 8.544т - 34кг

Therefore, the simplified form of the equation is 8.544т - 34кг.