-540 + _____ = -847

To find the missing number in the equation -540 + _____ = -847, we can rearrange it:

_____ = -847 – (-540)

This simplifies to:

_____ = -847 + 540

Now, calculate:

-847 + 540 = -307

So the correct answer is A) -307.

This means that -540 plus -307 gives us -847. If you have more questions, feel free to ask!