### Theory:

Rules for subtracting two integers
• First, change the sign of the subtrahend(second number) into the opposite.
• Then, change the operation subtraction to addition.
• Finally, apply the addition rule for integers.
Example:
1. Subtract $$2$$ from $$-5$$.

Step 1: The opposite of $$2$$ is $$-2$$. Change $$2$$ into $$-2$$ .

$$(-5) - (-2)$$.

Step 2: Now, change the operation subtraction into addition.

$$(-5) + (-2)$$.

Step 3: $$-5$$ and $$-2$$ both having same signs. Thus, add the integers and keep the sign same.

$$(-5) + (-2) = -7$$.

Therefore, $$(-5) - 2 = (-5) + (-2) = -7$$.

2. Find the difference of the integers $$(-16)$$ and $$(-14)$$.

Step 1: The opposite of $$-14$$ is $$14$$. Change $$-14$$ into $$14$$.

$$(-16) - (14)$$.

Step 2: Now, change the operation subtraction into addition.

$$(-16) + (14)$$.

Step 3: $$-16$$ and $$14$$ both having different signs.

Now, by the addition rule, subtract the integers and put larger number sign.

$$(-16) + 14 = -2$$.

Therefore, $$(-16) - (-14) = (-16) + (14) = -2$$.