The LCD for 1/5 and 1/10 is 10.
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The denominators of 20 and 15 are both 1, therefore, the lowest common denominator is 1.
945 is the lowest common denominator. 3 is the greatest common factor.
the answer is 108
To be able to divide by 15, the lowest common denominator of 414 and 15 should end itself by 5 or zero. This number would be 414 x 5 = 2070. Check: 2070 : 15 = 138.
There is an infinite number of common denominators for these two fractions. The lowest common denominator is 45.