Question

6м7см - 2м9дм 2м+5 дм7см

Answer 1

6м7см - 2м9дм=3м17см
2м+5дм7см=2м5дм7см 

Answer 2

To subtract these two measurements, we need to first convert them to the same units. Let's convert everything to centimeters:

6m 7cm = (6 x 100) + 7 = 607cm 2m 9dm = (2 x 1000) + (9 x 100) = 2900cm 2m 5dm 7cm = (2 x 1000) + (5 x 100) + 7 = 2507cm

Now we can subtract the second measurement from the first:

607cm - 2900cm + 2507cm = -786cm

The result is negative because the first measurement is smaller than the second. We can interpret this as a difference of 786cm in the opposite direction, or 7.86m. Therefore:

6m 7cm - 2m 9dm 2m + 5dm 7cm = -7.86m or 7m 86cm (if we take the absolute value of the difference).