cross-multiplying
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No!If numerator and denominator have the same signs the fraction is positive.If numerator and denominator have opposite signs the fraction is negative.
Make sure that the numerator and denominator have different signs.
Yes, this is an example of direct variation.A:This is a direct variation because both are in the numerator of a fraction and on opposite sides of the = sign. If they are both on the same side of the equals sign, then one would have to be in the numerator and the other in the denominator for them to be a direct variation.
You don't. If you are dividing fractions, you multiply by the reciprocal. For example, 2/3 times 6/11 is 2/3 * 6/11 = 4/11. But, 2/3 divided by 6/11 is 2/3 * 11/6 = 11/9 or 1 2/9. The reason you do this is because the numerator is being multiplied and a denominator is being divided. When you divide, you are doing the opposite of multiplying so you flip the fraction, which is an opposite operation then you can multiply, which is the opposite of dividing.
When the numerator gets bigger, the fraction gets bigger; that is, it has a greater value The opposite is true if the denominator gets bigger; in this case the the fraction gets smaller; that is, it has a lesser value