The common factor is 3. (105 = 35 x 3, 12 = 4 x 3).
The least common denominator is 420.
105 = 3 x 5 x 7
12 = 22 x 3
Highest exponents method: 22 x 31 x 51 x 71 = 420
105
The Greatest Common Divisor/Denominator is 21
The Greatest Common Divisor/Denominator is 35
The highest common denominator is 12 because 12/12=1 and 24/12=2.
There is none because the Least Common Denominator (or LCD) is the Least Common Multiple (LCM) of the denominators of two or more fractions.
105 is.
your common denominator would be 105
your common denominator would be 105
It is: 105
105
105
Convert both to decimal, and compare. For example, divide 81 / 105, and write down the decimal equivalent; the same for the other fraction. OR: Find a common denominator, and convert both to the common denominator. It need not be the least common denominator; any common denominator will do - for example, if you multiply 105 x 300, you have a common denominator (which is not the least common denominator in this case). The decimal method is much easier, by the way.
LCD(70, 105) = 210.
105
The lowest common denominator of any set of whole numbers is 1
A common denominator is 84.
The largest common denominator is an infinite amount.