Use the additive inverse to find −1223−(−856)
. Write the answer as a mixed number.(1 point)
To find the additive inverse of a number, we change its sign.
The additive inverse of -856 is 856 and the additive inverse of -1223 is 1223.
So, to find -1223 - (-856), we can rewrite the expression as 1223 + 856.
Then we can add the two numbers:
1223
+ 856
-----
2079
Therefore, -1223 - (-856) is equal to 2079.
The answer as a mixed number would be 2079.
To find the additive inverse of a number, we change its sign.
The additive inverse of -856 is 856.
Now, we can solve -1223 - (-856):
-1223 - (-856) = -1223 + 856
To add these two numbers, we need to align them based on place value:
-1223
+ 856
_________
First, let's subtract the ones place:
3
+ 6
______
The difference is 9.
Next, let's subtract the tens place:
2
+ 5
_____
The difference is 3.
Lastly, let's subtract the hundreds place:
-1
+ 8
____
The difference is 7.
Therefore, -1223 - (-856) = -367.
Now let's write it as a mixed number. Since the result is negative, we will write it as -3 2/7.