Question

4 см 3 мм - 9 дм = 7 см 3 мм - 2 мм 6 мм =

Answer 1

во втором 47 и в первом тоже 47

Answer 2

To solve the given equations, we'll need to perform some unit conversions to ensure all measurements are in the same units. Let's convert everything to millimeters (mm) first and then proceed with the calculations.

1. 4 cm 3 mm - 9 dm: Since 1 dm = 10 cm, we can convert the 9 dm to cm by multiplying it by 10: 9 dm = 9 * 10 cm = 90 cm

Now, we can convert both measurements to millimeters: 4 cm = 4 * 10 mm = 40 mm 90 cm = 90 * 10 mm = 900 mm

Now, the equation becomes: 40 mm + 3 mm - 900 mm

Combine like terms: 40 mm + 3 mm - 900 mm = (40 + 3 - 900) mm = -857 mm

2. 7 cm 3 mm - 2 mm 6 mm: Since 1 cm = 10 mm, we can convert the 7 cm to mm by multiplying it by 10: 7 cm = 7 * 10 mm = 70 mm

Now, we can convert both measurements to millimeters: 70 mm = 70 mm 2 mm = 2 mm 6 mm = 6 mm

Now, the equation becomes: 70 mm + 3 mm - (2 mm + 6 mm)

Combine like terms: 70 mm + 3 mm - (2 mm + 6 mm) = (70 + 3 - 2 - 6) mm = 65 mm

So, the final results are:

1. 4 cm 3 mm - 9 dm = -857 mm
2. 7 cm 3 mm - 2 mm 6 mm = 65 mm