Identify Signs: Identify the signs of the numbers involved. 11 is positive, and −2 is negative. When subtracting a negative number, it is equivalent to adding its positive counterpart.
Convert to Addition: Convert the subtraction of a negative number to addition. Subtracting −2 is the same as adding 2. So, the expression 11−(−2) becomes 11+2.
Add Positive Numbers: Add the two positive numbers. 11+2 equals 13, which is a positive number.