Question

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

Answer 1

To solve \(-123.45 - (-234.76)\) using additive inverses, we can rewrite the expression by recognizing that subtracting a negative number is equivalent to adding its positive counterpart.

So, we have:

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

Next, we'll compute the sum \(-123.45 + 234.76\):

1. Align the numbers by their decimal points:

```
234.76
- 123.45
```

2. Now, subtract the numbers:

- Start from the right: \(6 - 5 = 1\)
- Next column: \(7 - 4 = 3\)
- Next column: \(4 - 3 = 1\)
- Finally: \(2 - 1 = 1\)

Putting it all together, we get:

\[
234.76 - 123.45 = 111.31
\]

Therefore,

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

The final answer is:

\[
\boxed{111.31}
\]