Because otherwise you would only know how to subtract and add with the same integers. Not a particularly useful skill unless just those integers turned up!
to subtract an integer, add its opposite or additive inverse.
add, subtract, multiply, divide
When you add, subtract, or multiply integers, you get integers. When you divide one integer by another one, you may or may not get an integer.
Integers
Because otherwise you would only know how to subtract and add with the same integers. Not a particularly useful skill unless just those integers turned up!
you can add subtract multiply and divide them.
to subtract an integer, add its opposite or additive inverse.
add, subtract, multiply, divide
When adding negative integers, you subtract. (2+-1=1) When subtracting negative integers, you add. (2--3=5)
When you add, subtract, or multiply integers, you get integers. When you divide one integer by another one, you may or may not get an integer.
Integers
+2 + -1= 1
Integers do not have sides so the question does not make sense.
add subtract divide multiplication
Because in alot of future jobs, you need to know how to add/subtract/divide/multiply negatves to positives and vice versa.
You arrive at a resultant, the resultant depends on the operation carried out.