When you subtract integers, it is the same thing as adding the inverse of the second integer. You can consider the following:

\(\displaystyle -4 -6\)

\(\displaystyle -4 + (-6) = -10\)

You can also consider the problem as asking for six less than negative four. This will also get you to the answer of \(\displaystyle -10\). 

When you subtract integers, it is the same thing as adding the inverse of the second integer. You can consider the following:

\(\displaystyle -5-(-4)\)

\(\displaystyle -5 + 4 = -1\)

This is a simple subtraction problem involving two positive numbers.

\(\displaystyle 13\) is greater than \(\displaystyle 9\); therefore, we will treat this operation as a normal subtraction problem.

\(\displaystyle 13-9=4\)

The answer is \(\displaystyle 4\).

This is a simple subtraction problem involving two positive numbers.

\(\displaystyle 21\) is greater than \(\displaystyle 7\); therefore, we will treat this operation as a normal subtraction problem.

\(\displaystyle 21-7=14\)

The answer is \(\displaystyle 14\).

This is a simple subtraction problem involving two positive numbers.

The numbers are the same with diferent signs; therefore, their difference is \(\displaystyle 0\).

\(\displaystyle 98-98=0\)

This is a complex subtraction problem involving two negative numbers.

\(\displaystyle -2-(-3)\)

Subtracting a negative number is the same as adding a positive number. Rewrite.

\(\displaystyle -2+3\)

Since \(\displaystyle 3\) is greater than \(\displaystyle 2\) and is positive, the answer is positive. We will treat this operation as a subtraction problem.

\(\displaystyle 3-2=1\)

The answer is \(\displaystyle 1\).

This is a complex subtraction problem involving two negative numbers.

\(\displaystyle -5-(-2)\)

Subtracting a negative number is the same as adding a positive number. Rewrite.

\(\displaystyle -5+2\)

Since \(\displaystyle 5\) is greater than \(\displaystyle 2\) and is negative, the answer is negative. We will treat this operation as a subtraction problem.

\(\displaystyle -(5-2)=-3\)

The answer is \(\displaystyle -3\).

This is a complex subtraction problem involving two negative numbers.

\(\displaystyle -13-(-13)\)

Subtracting a negative number is the same as adding a positive number. Rewrite.

\(\displaystyle -13+13\)

The numbers are the same with diferent signs; therefore, their difference is \(\displaystyle 0\).

\(\displaystyle 13-13=0\)

This is a complex subtraction problem involving a positive and a negative number.

\(\displaystyle 4-(-5)\)

Subtracting a negative number is the same as adding a positive number. Rewrite.

\(\displaystyle 4+5\)

We have an addition problem now.

\(\displaystyle 4+5=9\)

The answer is \(\displaystyle 9\).

This is a complex subtraction problem involving a positive and a negative number.

\(\displaystyle 10-(-16)\)

Subtracting a negative number is the same as adding a positive number. Rewrite.

\(\displaystyle 10+16\)

We have an addition problem now.

\(\displaystyle 10+16=26\)

The answer is \(\displaystyle 26\).