From the sum of -734 and 689, subtract the sum of 823 and -345.

Answer

To solve the problem step by step, we will follow the operations as described in the question.

**Step 1: Calculate the sum of -734 and 689.**

\[ -734 + 689 \]

To perform this addition, we can think of it as:

\[ 689 - 734 = -45 \]

So, the sum of -734 and 689 is -45.

**Step 2: Calculate the sum of 823 and -345.**

\[ 823 + (-345) \]

This can be rewritten as:

\[ 823 - 345 \]

Now, performing the subtraction:

\[ 823 - 345 = 478 \]

So, the sum of 823 and -345 is 478.

**Step 3: Subtract the result from Step 2 from the result of Step 1.**

Now we need to subtract the sum we found in Step 2 from the sum we found in Step 1:

\[ -45 - 478 \]

This can be rewritten as:

\[ -45 + (-478) = -45 - 478 \]

Now, performing the addition:

\[ -45 - 478 = -523 \]

So, the final result is:

\[ -523 \]

Thus, the answer to the question is **-523**.

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