Question

"1м 2дм+7м7дм-56дм="

Answer 1

1м=10дм
12дм+77дм-56дм=33дм

Answer 2

To solve the expression "1м 2дм + 7м 7дм - 56дм," we need to perform addition and subtraction of the given measurements. Let's convert all the measurements to the same unit, decimeters (дм), and then perform the calculations.

1м is equal to 10дм (1 meter = 10 decimeters). 2дм remains the same. 7м is equal to 70дм. 7дм remains the same. 56дм remains the same.

Now, let's perform the calculations:

1м 2дм + 7м 7дм - 56дм = 10дм + 2дм + 70дм + 7дм - 56дм = 12дм + 77дм - 56дм = 89дм - 56дм = 33дм

Therefore, "1м 2дм + 7м 7дм - 56дм" is equal to 33дм.