1.5 + (0.7 + (1.4 – 0.5)) = ____?

2.1

3.1

2.5

None of these

To evaluate the expression, follow the order of operations (PEMDAS):

1. Evaluate the innermost parentheses:

1.4 - 0.5 = 0.9

So, the expression becomes:

1.5 + (0.7 + 0.9)

2. Evaluate the next set of parentheses:

0.7 + 0.9 = 1.6

Now, the expression becomes:

1.5 + 1.6

3. Finally, add the numbers:

1.5 + 1.6 = 3.1