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The result (which should be simplified) is another fraction of some kind:
* a proper (or vulgar fraction) with the numerator (top number) less than the denominator (bottom number);
* an improper fraction with the numerator greater than the denominator which can be converted into a mixed number; or
* an integer (whole number).
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Why do you need a common denominator when adding and subtracting fractions but not when you multiply or divide fractions?
For subtracting and adding you cannot add or subtract unalike things. For multiplication and division you can multiply by whatever you want. In some maths you even multiply by variables such as "x". Or divide by them.
When doing fractions why is it easier to multiply and divide fractions than add and substract fractions?
It is easier to multiply or divide fractions than to add or subtract fractions because in multiplication, you just have to multiply the numerator by the numerator and the denominator by the denominator. Same applies with division of fractions, except that you have to reciprocate the fraction you're dividing with (divisor) then proceed to multiplication. Whereas, in addition and subtraction of fractions, you still have to get their Least Common Denominator (LCD).
What school subject is fractions related to?
Math is related to fractions. if you look in a math book or just online then one of the math topics is fractions. You learn how to divide, multiply, add and subtract, simplify and more about fractions and what to do with them.
Why do you invert fractions?
When you divide by fractions, you invert and multiply.
What happens when you add sutract multiply and divide integers?
When you add, subtract, or multiply integers, you get integers. When you divide one integer by another one, you may or may not get an integer.
