Evaluate the given expression.

Question

-12.3-(-9.6)+10.5+(-10.5)

A.
21.9
B.
-21.9
C.
-2.7
D.
2.7

Answer 1

To evaluate the expression $-12.3-(-9.6)+10.5+(-10.5)$, we can start by simplifying the expression step by step.

1. Simplify $-(-9.6)$ to $+9.6$:

$$-12.3+9.6+10.5-10.5$$

2. Combine the terms:

Now, let's combine $-12.3$ and $9.6$:

$$-12.3+9.6=-2.7$$

So now we have:

$$-2.7+10.5-10.5$$

3. Next, combine $10.5$ and $-10.5$:

$$10.5-10.5=0$$

This simplifies our expression to:

$$-2.7+0=-2.7$$

Thus, the value of the expression is:

$$\boxed{{\displaystyle -2.7}}$$

The correct answer is C. -2.7.