Subtracting a negative number is the same as adding the positive version. So 3- (-4) = 3+7. The same thing is true of all numbers, including fractions. So just add the fractions like you would normally do.
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Addition or subtraction of fractions require "like" fractions: that is, fractions with the same denominator.
addition,subtraction,multiplication,division
Because a negative negative is the same a a positive, and because of the definition of subtraction and addition.
Yes it does. Because the it acts like subtraction, but since the positive, negative number scales run backwards like a mirror, subtraction is addition with two negative numbers.
Typically, addition, subtraction, multiplication, division, fractions and percentages.