Use the additive inverse to find -492.89-(-871.78)

To find the result of subtracting a negative number, we can use the additive inverse.

The additive inverse of any number is simply the negative value of that number. For example, the additive inverse of 5 is -5.

To find -492.89 - (-871.78), we can rewrite it as -492.89 + 871.78.

Then, we can use the additive inverse of -871.78, which is positive 871.78.

Therefore, -492.89 - (-871.78) = -492.89 + 871.78 = 378.89.

To find the sum of -492.89 and the additive inverse of -871.78, we need to change the sign of -871.78 and add it to -492.89.

The additive inverse of a number is the opposite sign of the number. So, the additive inverse of -871.78 is 871.78.

Now, we can add -492.89 and 871.78:

-492.89 + 871.78 = 378.89

Therefore, -492.89 - (-871.78) is equal to 378.89.