60
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2/12=1/6 The LCD of 1/6 and 3/4=The LCD of 1/6 and 1/4=12 Therefore, 2/12 and 9/12 have the same denominator. They are equal to the original fractions. LCD=12
The LCD of 5 and 4 is 20.
Assume an additive expression.X5 + X3X3(X2 + 1)--------------------so,X3====Is the LCD
LCD(12, 20) = 60
LCD(9, 28) = 252