To multiply negative and positive numbers together, multiply the numbers as usual, and then add a negative sign to the answer. This is because the product of a negative and a positive number multiplied together is always... More » Math Algebra

If one subtracts a positive number from a negative number, the process is still subtraction. For example, -3 minus 7 is -10. On the other hand, subtracting a negative number from a positive number is equivalent to additi... More » Math Algebra

The result of a adding a positive number and a negative can either be a negative number or a positive number, depending on the sign of the biggest number. If the sign of the larger number is negative, then the result is ... More » Math Arithmetic
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