Question

Which set of expressions are not equivalent?(9 c + 12) - c - 3 and 8 c + 94 c - 2 c - 3 and 2 c - 35 c - 2 c + 8 - 4 and 3 c + 40.5 + (10 c + 8) and 5 c - 4

Answer 1

0.5 + (10c + 8) and 5c - 4

Step-by-step explanation:

For each set of expressions, we need to eliminate the parenthesis and add the like terms, so for each option, we get:

(9c + 12) - c - 3 and 8c + 9 ----> equivalent

(9c + 12) - c - 3

9c + 12 - c - 3

(9c - c) + (12 - 3)

8c + 9

4c - 2c - 3 and 2 c - 3 -----> equivalent

4c - 2c - 3

(4c - 2c) - 3

2c - 3

5c - 2c + 8 - 4 and 3 c + 4 -----> equivalent

5c - 2c + 8 - 4

(5c - 2c) + (8 - 4)

3c + 4

0.5 + (10c + 8) and 5c - 4 ----> not equivalent

0.5 + 10c + 8

10c + (0.5 + 8)

10c + 8.5

Therefore, the answer is 0.5 + (10c + 8) and 5c - 4.