The lowest common multiple, or lowest common denominator, of 18 and 28 is 252.
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The lowest common denominator of any two or more whole numbers, such as 26 and 28, will always be one (1) because 'common denominator' refers to the denominators of two or more fractions or mixed numbers, not whole numbers. So, a set of whole numbers (x,x) would have to be converted to their fraction equivalents, i.e., x/1, which will always yield a denominator of 1.
the lowest common multiple of 28 and 30 is 420.
To write 14 over 28 in its lowest terms, you need to find the greatest common divisor (GCD) of 14 and 28, which is 14. Dividing both the numerator and denominator by 14 yields 1/2. Therefore, 14 over 28 in its lowest terms is 1 over 2.
7
To find a common denominator, it's what 4 and 7 go into, and that's 28.