Look at the last number in the decimal.
12.66
12.63
Compare 6 and 3. 6 is larger so therefore 12.6666666 is larger. (You also need to compare the tenths place too, but these happen to have the same tenths place, .6.
Answer:
wait what
Step-by-step explanation:
21/1.5=14
14 years to erode
10.
42-22 is 20
20 minutes divided by 2 minutes is 10