An expression for the illustration on the number line is -1 + (-3) . The sum is -4.
The first illustration begins at 0 and ends at -1 . Since , the arrow extends 1 unit to the left from 0 , we have
The second illustration begins at -1 and extends to -4 . Since the arrow extends 3 units to the left from -1, we have;
An expression for the sum is ;
Now we have ;
-1 - 3 = -4
Complete Question:
A number line from negative 5 to 1 with two arrows on top of it. One arrow begins at 0 and ends at negative 1. It is labeled negative 1. Another arrow begins at negative 1 and ends at negative 4. It is labeled negative 3.
An expression is ___ . Find its sum