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It does not, though the answer does depend on the nature of transactions. Despite popular belief to the contrary, lots of bartering - formal or informal - goes on all the time. Car-share is a somewhat formal example. You take your children and their friends to a party, one of the other parents brings them back is a more informal transaction. No money involved.
And the only loser is the taxman!
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What two denominators have no common denominator?
Every set of denominators has a common denominator, even if it's only their product.
How do you completely simplify a fraction?
Divide the numerator and denominator by every common factor greater than 1.
Does every step in addition and subtraction of different denominators have a mathematical concept involved?
Yes because they must all have the same denominator and this is found by working out their lowest common denominator.
What is the least common denominator of 25 and 30?
Least common denominator: the smallest multiple or factor that is exactly divisible by every member of a set of numbers. Factors of 25: 1, 5, 25 Factors of 30: 1,3,5,10,30 Shared factors of 25 and 30: 1,5 Therefore, the least common denominator would be 1 because it is the smallest factor shared between the two numbers.
Why can every number be written as a fraction?
Every rational number, which includes integers, can be written as a fraction, with 1 in the denominator [bottom], or you could multiply the number by 2, and have this as the numerator [top], then have 2 in the denominator [bottom]. But when you say every number, the irrational numbers [such as pi, e, square root of 2, etc.]can not be written as a fraction.
