Given the ratio 12/36, if you divide each term by 3, you get:
Then, 4:10 is not equivalent to 12/36.
if you divide each term by 2, you get:
or 6:18
If you multiply each term by 3/2, you get:
Then, 18:24 is not equivalent to 12/36.
If you multiply each term by 4, you get:
Then, 48:16 is not equivalent to 12/36.