Question

Which set of expressions is not equivalent?

4c - 2c - 3 and 2c - 3
(9c + 12) - c - 3 and 8c + 9
5c - 2c + 8 - 4 and 3c + 4
0.5 + (10c + 8) and 5c - 4

Answer 1

the last one

Explanation:

Answer 2

The last one

Explanation:

Match the same terms. Example. (9c+12)-c-3

First put all of the c's together. 9c-c=8c. Th look at the integers. 12-3=9. 8c+9. They are equivalent. The only one this doesn't work for is the last one.