A negative minus a negative is equal to another negative number, a positive number or zero, depending upon the numbers in the equation. Subtracting a negative number from another negative number is the same thing as adding a positive number.
If the negative number being subtracted is the same as the number from which it is subtracted, the answer is zero. For example, -5 - (-5) = 0. If the negative number being subtracted is greater in value than the negative number from which it is being subtracted, the answer is negative. For example, -10 - (-8) = -2. If, however, the negative number being subtracted is less in value than the negative number from which it is being subtracted, the answer is a positive number. For example, -10 - (-12) = 2.
Learn MoreNegative numbers are real numbers. The set of real numbers includes all the numbers that can be shown on a number line including both positive and negative numbers.
Full Answer >A triangular number is one that is the sum of all positive integers less than or equal to a given positive integer. A square number is the product of an integer multiplied by itself. A square triangle is both a square and a triangular number. There is no specific relationship between square and triangular numbers, other than the fact that some triangular numbers are also square.
Full Answer >The set of natural numbers that is less than or equal to eight is {0, 1, 2, 3, 4, 5, 6, 7, 8}. A natural number is zero or any whole positive number. The numbers zero through seven are included because they are less than eight and fit the definition.
Full Answer >Some examples of uses of negative numbers in everyday life are calculating the price paid for a service or determining the amount of weight lost. Negative numbers are present in all day-to-day activities that use subtraction or that compute a loss of any kind. Using negative numbers in many circumstances is largely a matter of keeping track of what items must be subtracted instead of added.
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