Answer:
no, they are not equal
Explanation:
in order for these to be equal, they would need to have a number in common that you can use to divide the larger one by to get the smaller one
with 10:12, we can start with dividing each side by 2
10/2=5, which so far seems to confirm the equation being true, but 12/2=6, so 10:12 is not equal to 5:8