The lowest common denominator of 30 and 42 is 210.
30=2x3x5 45=3x3x5 2x3x3x5=90 The lowest common multiple.
If you mean the lowest, it's 2
The common denominator is 30. There are others, but 30 is the LCD.
The word "lowest" is a superlative. Being a superlative means that there can be only one such number so asking about lowest common denominators is nonsense. The lowest common denominator is 102172070.
The lowest common denominator is 30
The lowest common denominator of 30 and 42 is 210.
30.
30 is.
the lowest common denominator is 70 the numerators would become 63 and 30
The lowest common denominator of 5/42 and 7/30 is 210.
Since five, two, and three are all prime, the lowest common denominator is 30 or 2 * 3 * 5.
30=2x3x5 45=3x3x5 2x3x3x5=90 The lowest common multiple.
If you mean the lowest, it's 2
The easiest way is through prime factorization. Example: 1/30 and 1/42 The lowest common denominator in this case is the LCM of 30 and 42. 2 x 3 x 5 = 30 2 x 3 x 7 = 42 2 x 3 x 5 x 7 = 210, the LCM and the lowest common denominator.
The answer is 120. 30 X 4 = 120. 12 X 10 = 120.
7 x 30 = 210 which also can be the lowest common denominator for 5,6,7 believe it or not!