A negative number divided by a negative number always yields a positive number. For instance, -4 / -2 = 2. In other words, there are two -2s in -4.

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Multiplying or dividing both sides of an equation by a negative number changes the inequality of the equation, because it changes the sign of each side of the equation. On both sides, what was positive becomes negative, ...

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The multiplicative inverse of a negative number must also be a negative number. By definition, the product of a number and its multiplicative inverse is (positive) 1, which cannot be achieved by multiplying a positive an...

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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 addi...

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The concept of a number raised to the zero power equals one can be explained in several ways and is based on basic multiplicative concepts. Looking at the pattern established when a number is raised to different powers, ...

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At 115 volts of current, 115 watts is equal to one amp, but the number of watts to equal an amp varies based on the current. If using a 12-volt battery to power the circuit, 12 watts is equal to one amp.

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In a standard recipe, the number of jumbo eggs equivalent to one large egg varies based on the total number of eggs being used. Substitute the sizes one for one in a recipe that calls for one egg. In recipes calling for ...

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