12/15 simplifies to 4/5, whereas all the others simplify to 2/3. Therefore, 12/15 is not equivalent to the rest.
Answer:
245
Step-by-step explanation:
1m-100cm
2.45m=2.45x100
The answer is -50.429
You would replace the -1/2 where r is at, divide 7& -1/2, then add it to 51