Question

Which expression is equivalent to 2.5+3a - 20-9.5?

A: 5.5a - 29.5
B: 3a - 32
C: 3a - 27
D: 5.5a - 10.5

Answer 1

Answer: C - 3a - 27

Explanation:

We start with 2.5 + 3a - 20 - 9.5, and first solve for variables:

3a

Then we solve for constants:

2.5 - 20 - 9.5 = 2.5 - 29.5 = -27

Add the two together:

3a - 27