Question

5cm 9mm-1cm 7mm
$1$
​

Answer 1

1 cm = 10 mm

5 cm = 50 mm

5 cm 9 mm = 50+9= 59 mm

1 cm 7 mm = 10+7= 17 mm

So 59-17=42 mm= 4 cm 2 mm

I hope this helps you and please mark me the brainliast