A common denominator, though not the least one, is 120.
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A common denominator is 12.
The LCD for 3/4 and 1/2 is 4.
2/3 + 3/4 The LCM of 3 and 4 is 12. The least common denominator is 12. 2/3 = 8/12 3/4 = 9/12
Sir/Ma'am, denominator are fractions, so the is no common denominator. But the least common multiples is 30
For 3/4 and 2/3 the LCD is 12.