Use the additive inverse to find -492.89- -871.78.
To find the sum of -492.89 and -871.78, we can rewrite the second number using its additive inverse:
-492.89 - (-871.78)
Using the rule of subtracting a negative number (which is the same as adding its positive value), we can rewrite the expression as:
-492.89 + 871.78
Now we can perform the addition:
= 378.89
Therefore, -492.89 - (-871.78) is equal to 378.89.
To find the sum of -492.89 and -871.78 using the additive inverse, we can change the operation and rewrite it as the sum of -492.89 and the additive inverse of -871.78. The additive inverse of a number is simply the negative of that number.
The additive inverse of -871.78 is 871.78. So, we can rewrite the expression as:
-492.89 + 871.78
To add these two numbers, we align the decimal points and perform the addition:
-492.89
+ 871.78
___________
378.89
Therefore, -492.89 - -871.78 is equal to 378.89.