The rules for division are exactly the same as the rules for multiplication.
* Division (or multiplication) of a positive number by a positive number = positive
* Division of a positive number by a negative number = negative
* Division of a negative number by a positive number = negative
* Division of a negative number by a negative number = positive
If you have trouble remembering any of these, just try out a sample division on any calculator - for instance, if you divide (-1) / (-1) you get +1.
if both have the same sign the answer is positive, if they have different signs the answer is negative.
if both have the same sign the answer is positive, if they have different signs the answer is negative.
for integers with tow different signs, it will always be negative in multiplying and division. for adding and subtracting, the sign is for the bigger number.
If you're talking about multiplication or division, then opposite signs will result in a negative number.
12
A negative divided or multiplied by a negative is always positive. Just like how in English, a double-negative is positive.
It the signs of the two numbers that you are multiplying or dividing is the same, then the answer is positive, otherwise the answer is negative. Remember though, that division by 0 is not defined.
It's a positive number. Here's the rule: In multiplication and division . . . -- If both numbers have the same sign, then the result of multiplying or dividing them is positive. -- If the two numbers have different signs, then the result of multiplying or dividing them is negative.
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Work the problem the same as usual, but then prefix the answer with the appropriate sign. First perform the division--numerator divided by the denominator--without regard to the sign. The sign of your answer depends on the combination of the signs of the numerator, the denominator, and the fraction itself. * If there are an even number of minus signs, the answer is positive. * If there are an odd number of minus signs, the answer is negative. * If there are an no minus signs, the answer is positive.
Multiplication or division of two numbers of opposite signs: negative*positive, positive*negative, negative/positive, and positive/negative. Addition of two negative numbers: -5 + -2 = -7 Multiplying pure imaginary numbers of the same 'sign' : 5i * 2i = -10. -3i * -4i = -12. Dividing pure imaginary numbers of different signs (this comes from the fact that 1/i = -i, and i/i = +1)
-- Ignore the signs. -- Divide the first fraction by the second fraction, then decide whether the answer is positive or negative. -- If both numbers in a division have the same sign, then the quotient is positive. So the quotient is positive, and you're done.