Question

Use the additive inverse to find - 123.45 - (-234.76)

O 121.31
O -111.31
O 111.31
O 358.21

Answer 1

To solve the expression \(-123.45 - (-234.76)\), we can use the concept of the additive inverse. The additive inverse of a number \(x\) is \(-x\). Therefore, subtracting a negative number is equivalent to adding its positive counterpart.

So, we can rewrite the expression:

\[
-123.45 - (-234.76) = -123.45 + 234.76
\]

Now, let's calculate this:

1. First, we add the two numbers while taking care of their signs:
\[
234.76 - 123.45
\]

2. Now, let's perform the subtraction:
- We can align the numbers:

```
234.76
- 123.45
---------
```

3. Now we subtract:

- For the hundredths place: \(6 - 5 = 1\)
- For the tenths place: \(7 - 4 = 3\)
- For the units place: \(4 - 3 = 1\)
- For the tens place: \(3 - 2 = 1\)
- For the hundreds place: \(2 - 1 = 1\)

So, putting it together, we get:

\[
234.76 - 123.45 = 111.31
\]

Thus, the final result is:

\[
-123.45 - (-234.76) = 111.31
\]

Therefore, the answer is:

**111.31**